- 10T Tech
 - 1NCE
 - 1oT
 - 29Metals
 - 2TEST (Alkor-Communication)
 - 3D-P
 - 3GPP (Third Generation Partnership Project)
 - 450 MHz Alliance
 - 450connect
 - 4K Solutions
 - 4RF
 - 5G Campus Network Alliance
 - 5G Forum (South Korea)
 - 5G Health Association
 - 5G Media Initiative
 - 5GAA (5G Automotive Association)
 - 5G-ACIA (5G Alliance for Connected Industries and Automation)
 - 5GAIA (5G Applications Industry Array)
 - 5GCT (5G Catalyst Technologies)
 - 5GDNA (5G Deterministic Networking Alliance)
 - 5GFF (5G Future Forum)
 - 5G-MAG (5G Media Action Group)
 - 5GMF (Fifth Generation Mobile Communication Promotion Forum, Japan)
 - 5GSA (5G Slicing Association)
 - 6G Finland
 - 6GEM Consortium
 - 6G-IA (6G Smart Networks and Services Industry Association)
 - 6G-RIC (Research and Innovation Cluster)
 - 6Harmonics/6WiLInk
 - 6WIND
 - 7-Eleven
 - 7Layers
 - 7P (Seven Principles)
 - 8G Wireless
 - A Beep/Diga-Talk+
 - A*STAR (Agency for Science, Technology and Research, Singapore)
 - A1 Hrvatska
 - A1 Telekom Austria Group
 - A10 Networks
 - A5G Networks
 - AAEON Technology
 - Aalborg University
 - AALTO HAPS
 - Aalto University
 - AAR (Association of American Railroads)
 - Aarna Networks
 - ABB
 - ABB Robotics
 - ABDI (Brazilian Agency for Industrial Development)
 - ABEL Mobilfunk
 - ABiT Corporation
 - ABP (Associated British Ports)
 - ABS
 - Abside Networks
 - Abu Dhabi Police
 - Accedian
 - AccelerComm
 - Accelink Technologies
 - Accelleran
 - Accenture
 - ACCESS CO.
 - Access Spectrum
 - Accesso
 - AccessParks
 - ACCF (Australasian Critical Communications Forum)
 - Accton Technology Corporation
 - Accu-Tech
 - Accuver
 - Ace Internet Services
 - ACE Technologies
 - AceAxis
 - AceTel (Ace Solutions)
 - Achronix Semiconductor Corporation
 - ACMA (Australian Communications and Media Authority)
 - ACMOSS (Agency for Operational Security & Rescue Mobile Communications, France)
 - ACOME
 - Acorn Wireless
 - ACPS (Albemarle County Public Schools)
 - Acromove
 - ACS (Applied Computer Solutions)
 - ACT (Aqaba Container Terminal)
 - Actelis Networks
 - Actemium (VINCI Energies)
 - Actility
 - Action Technologies (Shenzhen Action Technologies)
 - Actiontec Electronics
 - Active911
 - Actus Networks
 - AD Plastik
 - Adani Data Networks
 - Adani Group
 - Adax
 - Adcor Magnet Systems
 - Addis Ababa Light Rail
 - Adecoagro
 - Adelaide Airport
 - Adeunis
 - ADF (Australian Defence Force)
 - ADI (Analog Devices, Inc.)
 - Adif (Spanish Railway Infrastructure Administrator)
 - Adif AV (Alta Velocidad)
 - ADLINK Technology
 - ADMIE/IPTO (Independent Power Transmission Operator, Greece)
 - ADNOC (Abu Dhabi National Oil Company)
 - Adora Cruises
 - ADRF (Advanced RF Technologies)
 - ADT
 - Adtran
 - ADVA
 - Advanced Energy Industries
 - AdvanceTec Industries
 - Advantech
 - Advantech Wireless Technologies
 - AE Aerospace
 - AECC (Aero Engine Corporation of China)
 - AECC Commercial Aircraft Engine Company
 - AEG
 - Aegex Technologies
 - Aena
 - Aerial Applications
 - Aeris
 - Aero Wireless Group
 - AeroFarms
 - AeroMobile Communications
 - Aerostar International
 - Aervivo
 - Aethertek
 - Aetna Group
 - AFC (Asian Football Confederation)
 - Affarii Technologies
 - Affirmed Networks
 - AFL Global
 - AFRY
 - AGC
 - AGCO Corporation
 - AGCOM (Communications Regulatory Authority, Italy)
 - AGH University of Krakow
 - Agile (Agile Interoperable Solutions)
 - AGIS (Advanced Ground Information Systems)
 - AGM Mobile
 - Agnico Eagle Mines
 - AG-Placid
 - AgriBusiness Connect (Formerly AgriFood Connect)
 - Agroamb
 - Agropark NART
 - Aguas de Valencia
 - AGURRE (Association of Major Users of Operational Radio Networks, France)
 - AH NET (MVM NET)
 - AI-LINK
 - AINA Wireless
 - Air China
 - Air France
 - Airband Community Internet
 - Airbus
 - Airfide Networks
 - AirForestry
 - Airgain
 - AirHop Communications
 - Airlinq
 - Airport Authority Hong Kong
 - Airspan Networks
 - Airtower Networks
 - Airwaive
 - Airwave Developers
 - Airwave Solutions
 - Airwavz Solutions
 - AIS (Advanced Info Service)
 - AiVader
 - Ajman Police
 - Akamai Technologies
 - Aker Solutions
 - AKIS International
 - AKOS (Agency for Communication Networks and Services of the Republic of Slovenia)
 - Akoustis Technologies
 - Alaska Airlines
 - Alaxala Networks Corporation
 - ALBEDO Telecom
 - Albemarle Corporation
 - Albert Einstein Hospital
 - Albert Schweitzer Hospital
 - albis-elcon
 - ALBO (Hijos de Carlos Albo)
 - Alcadis
 - Alcatel-Lucent International
 - Alcoa
 - Alcobendas City Council
 - Aldenhoven Testing Center
 - ALE (Antarctic Logistics & Expeditions)
 - Alea
 - Alectra Utilities
 - Alef (Alef Edge)
 - Alepo
 - Alestra
 - Algar Telecom
 - Alibaba Group
 - Aliniant
 - Allbesmart
 - Allen Vanguard Wireless
 - Allerio
 - Alliander
 - Allied Telesis
 - Allot
 - Alnan Aluminium
 - Alpha Networks
 - Alpha Wireless
 - Alphabet
 - Alps Alpine
 - Alrosa
 - Alsa
 - Alsatis Reseaux
 - Alstom
 - Altaeros
 - altafiber (Cincinnati Bell)
 - Altair Semiconductor (Sony Semiconductor Israel)
 - AltaLink
 - ALTAN Redes
 - ALTEN
 - Altice Group
 - Altice Labs
 - Altice Portugal
 - Altiostar
 - ALVIS (Argentina)
 - AM Telecom
 - AMA XpertEye
 - AMAGGI
 - Amantya Technologies
 - Amarisoft
 - Amata Corporation
 - Amazon
 - Ambra Solutions-ECOTEL
 - Ambulance Victoria
 - Ambulancezorg Groningen
 - AMD (Advanced Micro Devices)
 - Amdocs
 - Ameren
 - America Movil
 - American Tower Corporation
 - AMI (American Megatrends International)
 - AMIT Wireless
 - AMN (Africa Mobile Networks)
 - AMPC (Australian Meat Processor Corporation)
 - Ampere Computing
 - Amphenol Corporation
 - Ampleon
 - Ampliphae
 - Amtele Communication
 - ANA (All Nippon Airways)
 - ANACOM (National Communications Authority, Portugal)
 - Anatel (National Telecommunications Agency, Brazil)
 - ANAX Metals
 - ANCOM (National Authority for Management and Regulation in Communications, Romania)
 - Andesat
 - ANDEX (Sendai)
 - ANDRA
 - ANDRO Computational Solutions
 - Anek Lines
 - Anglo American
 - AngloGold Ashanti
 - Angola Telecom
 - Angolan Ministry of Interior
 - Anhui Conch Cement
 - Anktion (Fujian) Technology
 - Anokiwave
 - Anotiva
 - Anritsu
 - ANS (Advanced Network Services)
 - Anshan Iron & Steel Group
 - Ansteel Group
 - Antamina
 - Antenna Company
 - Anterix
 - Antevia Networks
 - Antna Antenna Technology
 - Antofagasta Minerals
 - Antwerp Police
 - Antwerp-Bruges Port Authority
 - Aorotech
 - AOT (Airports of Thailand)
 - APA Group
 - APBA (Port Authority of Algeciras Bay)
 - APCO (Association of Public-Safety Communications Officials) International
 - Apex Technology Group
 - APH (Huelva Port Authority)
 - API (American Petroleum Institute)
 - APM Terminals (Maersk)
 - APN (All Purpose Networks)
 - APPA (American Public Power Association)
 - Apple
 - Applus+ IDIADA
 - APRESIA Systems
 - APSTAR (APT Satellite Company)
 - APT (Asia Pacific Telecom)
 - APTEL (Association of Proprietary Infrastructure and Private Telecommunications Systems Companies, Brazil)
 - aql
 - Aqualia
 - Aquila (Suzhou Aquila Solutions)
 - Aqura Technologies
 - ARA (American Rally Association)
 - Arabsat
 - Aramco (Saudi Arabian Oil Company)
 - Aramco Digital
 - ARBURG
 - Arcadyan Technology Corporation
 - Arcelik
 - ArcelorMittal
 - ARCEP (Regulatory Authority for Electronic Communications and Posts, France)
 - Archos
 - ARCIA (Australian Radio and Communications Industry Association)
 - Arctic Semiconductor (Formerly SiTune Corporation)
 - Ardea Resources
 - Arete M
 - AREU (Lombardy Regional Emergency Service Agency)
 - AREX (Airport Railroad Express)
 - Argela
 - Argentine Federal Police
 - ArgoNET
 - Aria Networks
 - ARIB (Association of Radio Industries and Businesses, Japan)
 - Arista Networks
 - Arizona National Guard
 - Arkessa
 - Arm
 - Armasuisse (Federal Office for Defense Procurement, Switzerland)
 - Armour Communications
 - ARMZ (Atomredmetzoloto) Uranium Holding
 - ARQ Group
 - Arqit Quantum
 - Arqueiro Telecom
 - ArrayComm (Chengdu ArrayComm Wireless Technologies)
 - Arrcus
 - Arrow Energy
 - ARTC (Australian Rail Track Corporation)
 - Artemis Networks
 - Artemis Resources
 - Artiza Networks
 - Aruba
 - Arubaito World
 - Arukona
 - Arvato Supply Chain Solutions
 - Asagao TV
 - Asahi Kasei
 - Asahikawa Cable Television
 - Asavie
 - ASE Group
 - ASELSAN
 - AsiaInfo Technologies
 - AsiaSat (Asia Satellite Telecommunications Company)
 - Askey Computer Corporation
 - ASM Global
 - ASN (Alcatel Submarine Networks)
 - ASOCS
 - Aspire Technology
 - Aspire Technology Partners
 - ASR Microelectronics
 - Asseco CEIT
 - Assumption University of Thailand
 - Assured Wireless Corporation
 - AST SpaceMobile
 - ASTELLA (Astella Technologies)
 - ASTOR (Poland)
 - ASTRI (Hong Kong Applied Science and Technology Research Institute)
 - ASTRID
 - ASU (Arizona State University)
 - ASUS (ASUSTeK Computer)
 - Asylon
 - AT (Auckland Transport)
 - AT&T
 - AT&T Mexico
 - Ataya
 - ATDI
 - ATEL (Asiatelco Technologies)
 - Atel Antennas
 - Atesio
 - Athens International Airport
 - Athonet
 - ATIS (Alliance for Telecommunications Industry Solutions)
 - ATL (A Test Lab)
 - Atlas Copco
 - Atlas Iron
 - Atlas Telecom
 - AtlasEdge
 - AtLink Services
 - ATM Grupa
 - ATN International
 - Atos
 - ATP (Andean Telecom Partners)
 - Atrinet
 - ATS Elektronik
 - Attabotics
 - AttoCore
 - ATW Investment & Services
 - Auberge Resorts
 - Auckland Westpac Rescue Helicopter
 - Audace Tech
 - Auden Techno
 - Audi
 - audius
 - Auray Technology
 - Aurens (Orrence)
 - Aurora Flight Sciences
 - Ausgrid
 - Australia Pacific LNG
 - Australian Department of Home Affairs
 - Australian Productivity Commission
 - AUTC (Africa Utilities Technology Council)
 - Automotive Campus (Helmond)
 - AV Living Lab
 - Avanade
 - Avangrid
 - Avanti Communications
 - Avari Wireless
 - Aventiv Technologies
 - Avesha Systems
 - AVEVA
 - AVI
 - Aviat Networks
 - Avics
 - Avidyne Corporation
 - Avinor
 - Avionica
 - Avista Edge
 - AVIWEST
 - AVM
 - AW2S (Advanced Wireless Solutions and Services)
 - AWARE7
 - AWS (Amazon Web Services)
 - AWTG
 - AWWA (American Water Works Association)
 - AXESS Networks
 - Axians
 - Axiata Group
 - Axiom Space
 - Axione
 - Axis Communications
 - Axon
 - Axpo WZ-Systems
 - Axtel
 - Axxcelera Broadband Wireless
 - Axxcss Wireless Solutions
 - Axyom.Core (Formerly Casa Systems)
 - AZ Groeninge
 - Azcom Technology
 - Azetti Networks
 - B&R Bouwgroep
 - B+B SmartWorx
 - b-com (IRT b-com)
 - B5GPC (Beyond 5G Promotion Consortium)
 - BABS/FOCP (Federal Office for Civil Protection, Switzerland)
 - Badger Technologies (Jabil)
 - BAE Systems
 - Baffinland Iron Mines Corporation
 - Bahia State Secretariat of Public Security
 - Bahrain Airport Company
 - BAI Communications Australia
 - Baicells
 - BAKOM/OFCOM (Federal Office of Communications, Switzerland)
 - Balearia
 - Ball Aerospace
 - Ballast Networks
 - Balluff
 - Baltic Networks
 - BAM Nuttall (Royal BAM Group)
 - Bamrasnaradura Infectious Diseases Institute
 - Banco do Brasil
 - Banco Santander
 - BandRich
 - BandwidthX
 - Banedanmark
 - Bangladesh SSF (Special Security Force)
 - Bangs Ambulance
 - Baogang Group
 - Baoshan Iron & Steel
 - Baosteel Group
 - Baptist Health South Florida
 - Barcelona City Council
 - Barcelona Port Authority
 - Barcelona Port Police
 - Barich
 - Barrett Communications
 - BART (San Francisco Bay Area Rapid Transit District)
 - BARTEC
 - Baruch Padeh Medical Center
 - BASF
 - Basingstoke and Deane Borough Council
 - BasqueCCAM (Basque Center for Connected and Autonomous Mobility)
 - Batchfire Resources
 - Batelco
 - BATM Advanced Communications
 - BATS Wireless (Broadband Antenna Tracking Systems)
 - Bavaria Studios & Production Services
 - Bay Minette Police Department
 - Bayer
 - BAYFU (Bayerische Funknetz)
 - Baylin Technologies
 - BayRICS (Bay Area Regional Interoperable Communications Systems Authority)
 - BBB (BB Backbone Corporation)
 - BBC (British Broadcasting Corporation)
 - BBF (Brasil BioFuels)
 - BBK Electronics
 - BBVA (Banco Bilbao Vizcaya Argentaria)
 - BC Hydro
 - BC Live Productions
 - BCA (Building and Construction Authority, Singapore)
 - BCDVideo
 - BCP (Bournemouth, Christchurch and Poole) Council
 - BCX (Business Connexion)
 - BDBOS (Federal Agency for Public Safety Digital Radio, Germany)
 - Beach Energy
 - Beacon Minerals
 - Beagle Systems
 - Beam Semiconductor
 - Beam Wireless
 - Beamlink
 - BearCom
 - BEC Technologies
 - Becker Mining Systems
 - Beckhoff Automation
 - becon
 - Beeline Kazakhstan
 - Beeline Russia (VimpelCom)
 - Beep
 - Beeper Communications
 - Beijer Electronics Group
 - Beijing Capital International Airport
 - Beijing Chaoyang Hospital
 - Beijing Daxing International Airport
 - Beijing Emergency Center
 - Beijing MTR Corporation
 - Beijing University of Posts and Telecommunications
 - BELAZ
 - Belden
 - Belfast Harbour
 - BelFone
 - Belgian Federal Public Service Mobility and Transport
 - Bell Canada
 - Bellantenna
 - Belpre City Schools
 - Benetel
 - Berief Food
 - Berkshire Hathaway Energy
 - BESCom Elektronik
 - BesoVideo
 - Betacom
 - BH Technologies
 - Bharti Airtel
 - BHE (Bonn Hungary Electronics)
 - BHP
 - Bialystok University of Technology
 - Biazi Telecom
 - BICS
 - Bilbao Metro
 - Billion Electric
 - Binghamton Police Department
 - BinnenBereik
 - BIPT (Belgian Institute for Postal Services and Telecommunications)
 - Bird Technologies
 - Birmingham City Council
 - BISDN (Berlin Institute for Software Defined Networks)
 - Bittium
 - Bitwave Networks
 - Bivocom
 - BK Technologies
 - Black & Veatch
 - Black Box
 - BlackBerry
 - Blackned
 - BlackRock
 - Blickle & Scherer
 - BLiNQ Networks
 - Bloomcare
 - Bloxtel
 - Blu Wireless
 - Blue Arcus Technologies
 - Blue White Robotics
 - Blue Wireless
 - Bluebird
 - Blueforce Development Corporation
 - BLUnet Schweiz
 - BMA (BHP Mitsubishi Alliance)
 - BMRCL (Bangalore Metro Rail Corporation Limited)
 - BMS (Bristol-Myers Squibb)
 - BMW Brilliance Automotive
 - BMW Group
 - BMWK (Federal Ministry for Economic Affairs and Climate Action, Germany)
 - BNetzA (Federal Network Agency, Germany)
 - BNPB (National Agency for Disaster Management, Indonesia)
 - BNU (Beijing Normal University)
 - Bobcat Miner
 - BOCHK (Bank of China Hong Kong)
 - Boden Industrial Park
 - Boeing
 - Boelink (Shanghai Boelink Communication Technology)
 - Boingo Wireless
 - Boise Police Department
 - Boldyn Networks (Formerly BAI Communications)
 - Boliden
 - Bombardier
 - Bombers de Barcelona (Barcelona Fire Service)
 - BONC (BON Corporation)
 - Bonn Rhein-Sieg University of Applied Sciences
 - BoomGrow
 - Boost Mobile
 - Booz Allen Hamilton
 - Borealis
 - BorgWarner
 - Bosch Engineering
 - Bosch Rexroth
 - Boskalis Subsea Services
 - Boston Children's Hospital
 - Boston Dynamics
 - Boston Police Department
 - Boston Red Sox
 - Boston Scientific Corporation
 - Botkin Hospital
 - Botswana Police Service
 - Bouygues Telecom
 - Boxchip
 - BP
 - BPA (Bui Power Authority)
 - BPA (Busan Port Authority)
 - BR (Bayerischer Rundfunk)
 - Bradley University
 - BrainNet Consultants
 - Branch Communications
 - Bravis Hospital
 - BravoCom
 - Bravus Mining & Resources
 - Brazil Federal District Military Police
 - Brazilian Army
 - Bredengen
 - Bridge The Divide Foundation
 - Bridgestone Corporation
 - Brightwave
 - Brimbank City Council
 - Brisanet
 - Brisbane City Council
 - Bristol Port Company
 - British Army
 - British Sugar
 - Brittany Ferries
 - Broadcom
 - BroadForward
 - Broadmobi (Shanghai Broadmobi Communication Technology)
 - Broadpeak
 - Broadtech
 - Brussels Airport Company
 - BSNL (Bharat Sanchar Nigam Limited)
 - BT Group
 - BT Media & Broadcast
 - Btel (Bakrie Telecom)
 - BTG (Dutch Association of Large-Scale ICT & Telecommunications Users)
 - BTI Wireless
 - BTP (Brasil Terminal Portuario)
 - B-TrunC (Broadband Trunking Communication) Industry Alliance
 - BTU (Brandenburg University of Technology Cottbus-Senftenberg)
 - BubbleRAN
 - Buenos Aires City Police
 - Builder [X]
 - Bulgarian Ministry of Interior
 - Bullitt Mobile
 - Bumicom Telecommunicatie
 - Bundeswehr (German Armed Forces)
 - Bundeswehr University Munich
 - Bureau Veritas
 - Burlington Fire Department
 - Burns & McDonnell
 - Busan Transportation Corporation
 - Bushu Kogyo
 - Butachimie
 - BVSD (Boulder Valley School District)
 - BVSystems (Berkeley Varitronics Systems)
 - BWT (BlueWaveTel)
 - BYD
 - B-Yond
 - C Spire
 - C Squared Systems
 - C3Spectra
 - CABGOC (Cabinda Gulf Oil Company)
 - Cable Media Waiwai
 - Cable Television Toyama
 - CableFree (Wireless Excellence)
 - CableLabs
 - CABLEX Group
 - Caceres City Council
 - CACI International
 - Cadence Design Systems
 - Caesars Entertainment
 - CAICT (China Academy of Information and Communications Technology)
 - CaixaBank (Formerly Bankia)
 - Cal Poly (California Polytechnic State University)
 - CalAmp
 - CalChip Connect
 - Calgary Police Service
 - Caliber Public Safety
 - California National Guard
 - California State University, Stanislaus
 - Calix
 - Callio Pyhajarvi
 - Calnex Solutions
 - Calpak
 - Caltta Technologies
 - Cambium Networks
 - Cambridge Consultants
 - Cambridgeshire County Council
 - Cameron LNG
 - CAMET (China Association of Metros)
 - Campbell Union School District
 - CampusGenius
 - Camtel (Cameroon Telecommunications)
 - CAMTIC Advanced Mechatronics Technology Institute
 - Canadian Army
 - Canoga Perkins
 - Canon
 - Canonical
 - Canyon Coal
 - Capgemini
 - Capgemini Engineering
 - Capgemini Invent
 - CapitaLand
 - Capricorn Metals
 - CapX Nederland
 - Carahsoft Technology Corporation
 - Carbyne
 - Cargotec
 - Carnegie Mellon University
 - Carnival Corporation
 - CASCO Signal
 - CASIC (China Aerospace Science and Industry Corporation)
 - Casio Computer Company
 - Cassava Technologies
 - Castleberry ISD (Independent School District)
 - Castor Marine
 - CATA (Canadian Advanced Technology Alliance)
 - Catalyst Communications Technologies
 - Caterpillar
 - CATV (Cable TV)
 - Cavli Wireless
 - CBA (Chinese Basketball Association)
 - CBA (Commonwealth Bank of Australia)
 - CBNG (Cambridge Broadband Networks Group)
 - CBS Sports
 - CCEC (Chippewa Cree Energy Corporation)
 - CCI (Communication Components Inc.)
 - CCMA (Catalan Broadcasting Corporation)
 - CCN (Cirrus Core Networks)
 - CCSA (China Communications Standards Association)
 - CCTHITA (Central Council of the Tlingit & Haida Indian Tribes of Alaska)
 - CCww (Communications Consultants Worldwide)
 - CDA (Chicago Department of Aviation)
 - CDE Lightband
 - CDOT (Colorado Department of Transportation)
 - CEA (French Alternative Energies and Atomic Energy Commission)
 - CEA-Leti
 - CEA-List
 - Cegeka
 - CeLa Link Corporation
 - CelcomDigi
 - Celfinet
 - CellAntenna Corporation
 - Cellcom (Israel)
 - Cellcomm Solutions
 - Cellient
 - Celling 5G
 - CellMax Technologies
 - Cellnex Telecom
 - CELLocity (RF Connect)
 - CellOnyx
 - Cellwize
 - cellXica
 - cellXion
 - Celona
 - CelPlan Technologies
 - Cemig (Companhia Energetica de Minas Gerais)
 - Centerline Communications
 - CENTRA Technology
 - Central Petroleum
 - CentralSquare Technologies
 - Centria University of Applied Sciences
 - Centrica Storage
 - CEPRI (China Electric Power Research Institute)
 - Cepsa
 - CEPT (European Conference of Postal and Telecommunications Administrations)
 - Ceragon Networks
 - Cerillion
 - CERTI Foundation
 - CertusNet
 - CETC (China Electronics Technology Group Corporation)
 - CETIN Group
 - CEVA
 - CEZ Group
 - CFR (Romanian Railways)
 - CGI
 - Ch4lke Mobile
 - Challenge Networks
 - Chalmers University of Technology
 - Changan Automobile
 - Changchun Rail Transit
 - Changsha Metro
 - ChannelPorts
 - Charge Enterprises
 - Charite University Hospital Berlin
 - Charter Communications
 - Chat Mobility
 - Cheerzing (Xiamen Cheerzing IoT Technology)
 - Chelton
 - Chemring Technology Solutions
 - Chengdu Metro
 - Chengdu NTS
 - Chevron Corporation
 - Chicago Police Department
 - Chicony Electronics
 - China All Access
 - China Baowu Steel Group
 - China Broadnet (CBN - China Broadcasting Network)
 - China Gold International Resources
 - China Merchants Group
 - China Merchants Heavy Industries
 - China Mobile
 - China Mobile Hong Kong
 - China National Coal Group
 - China Nuclear Power Engineering
 - China Railway (China State Railway Group)
 - China Satcom (China Satellite Communications)
 - China Shenhua Energy
 - China Southern Airlines
 - China Telecom
 - China Unicom
 - China West Airport Group
 - China-Japan Friendship Hospital
 - CHN Energy (China Energy Investment Group)
 - Choice NTUA Wireless
 - Chongqing Guoyuan Port
 - Chongqing Jiangbei International Airport
 - Chongqing Rail Transit
 - CHU Rennes (Rennes University Hospital)
 - CHU Toulouse (Toulouse University Hospital)
 - Chubu Electric Power Company
 - Chukai Cable Television System Operator
 - Chulabhorn Hospital
 - Chulalongkorn University
 - Chunghwa Telecom
 - Cibicom
 - CICPA (Critical Infrastructure and Coastal Protection Authority, UAE)
 - CICT - China Information and Communication Technology Group (China Xinke Group)
 - CIE Automotive
 - Cielo Networks
 - Ciena Corporation
 - CIG (Cambridge Industries Group)
 - CIMIC Group
 - Cincinnati Police Department
 - Cinkarna Celje
 - CIO (Connected IO)
 - CipherTel
 - CircleGx
 - Circuit de Barcelona-Catalunya
 - Circuit Parcmotor Castelloli
 - Circuit Zandvoort
 - Cirpack
 - Cirtek Holdings Philippines Corporation
 - Cisco Systems
 - CITIC Pacific Mining
 - CITIG (Canadian Interoperability Technology Interest Group)
 - CITRA (Communication and Information Technology Regulatory Authority, Kuwait)
 - Citrosuco
 - City of Brownsville
 - City of Las Vegas
 - City of Longmont
 - City of Montgomery
 - City of Santa Maria
 - City of Tucson
 - Citycom Telekommunikation (Holding Graz)
 - Citymesh
 - CitySwitch
 - CJ Group
 - CJ Logistics
 - CJ OliveNetworks
 - CK Hutchison
 - CKH IOD
 - Clair Global
 - Clark County Department of Aviation
 - Claro Brasil
 - Claro Colombia
 - Clarus Networks Group
 - Clavister
 - Clear Channel UK
 - Clear Mobitel
 - ClearBlade
 - ClearLink Communications
 - ClearSky Technologies
 - Cleura
 - Cleveland Clinic
 - Cleveland Police
 - Clever Logic
 - Clinical Mobility (Intellicom)
 - Cloud Signals
 - CloudMile
 - CloudMinds
 - Clovity
 - CLP Power Hong Kong
 - CMG (China Media Group)
 - CMHIT (China Merchants Holdings Information Technology)
 - CMI (China Mobile International)
 - CMIG (China Minsheng Investment Group)
 - CMIoT (China Mobile IoT)
 - CMOC Group
 - CMP (Compania Minera del Pacifico)
 - CMPort (China Merchants Port Holdings)
 - CMU (Chiang Mai University)
 - CN (Canadian National Railway Company)
 - CNA (Cable Networks Akita)
 - CNCi (Community Network Center Inc.)
 - CNH Industrial
 - CNI Sales
 - CNN (Cable News Network)
 - CNNC (China National Nuclear Corporation)
 - CNOOC (China National Offshore Oil Corporation)
 - Cobham
 - Cobham Satcom
 - COCUS
 - Codan Communications
 - Codelco (National Copper Corporation of Chile)
 - Codium Networks
 - Cogisys
 - Cognizant
 - Cohere Technologies
 - Coherent (Formerly II-VI)
 - Coherent Logix
 - Cohort
 - Coiler Corporation
 - Collinear Networks
 - Collins Aerospace
 - Cologne Bonn Airport
 - Color Line
 - Colorado Parks and Wildlife
 - Colt Canada
 - Colt Technology Services
 - Colusa County Office of Education
 - COM PLUS
 - Com4
 - COMAC (Commercial Aircraft Corporation of China)
 - Comander
 - Comarch
 - Comau
 - Comba Telecom
 - Combain Mobile
 - Combitech
 - Comcast Business
 - Comcast Corporation
 - Comcores
 - Comfone
 - Comilog
 - COMLAB
 - CommAgility
 - CommandWear Systems
 - Commercis
 - Commnet Wireless
 - Comms International/TecWise
 - Comms365
 - CommScope
 - Compal Electronics
 - Comprod
 - Comptek Technologies
 - ComReg (Commission for Communications Regulation, Ireland)
 - Comrod Communication Group
 - Coms4Grid
 - Comsol (South Africa)
 - COMSovereign
 - Comtech Telecommunications Corporation
 - Comtest Wireless
 - Comtrend Corporation
 - Comviva
 - Con Edison (Consolidated Edison)
 - CONET Technologies
 - CONEXIO Corporation
 - CONGIV
 - Conigital
 - Connect Tech
 - Connect44 Group
 - Connected Devices
 - Connected Farms (Australia)
 - Connectivity Wireless Solutions
 - ConocoPhillips
 - Consolidated Minerals
 - Consort Digital
 - Contela
 - Continental
 - Contour Networks
 - Coolpad
 - COONTEC
 - Coopavel
 - CopaSAT
 - Copel (Companhia Paranaense de Energia)
 - Coranet
 - Core Lithium
 - coreNOC
 - Cornerstone (CTIL)
 - Cornet Technology
 - Corning
 - Correos
 - Cortina Access
 - Corum Group (DTEK Energy)
 - COSCO Group
 - COSCO Shipping Heavy Industry
 - COSCO Shipping Ports
 - Cosemi Technologies
 - COSMOTE
 - Cosumnes Fire Department
 - COTA (Circuit of The Americas)
 - Cotton Holdings
 - Council Rock
 - County of Renfrew Paramedic Service
 - Coventry University
 - Covestro
 - Coweaver
 - Cox Communications
 - Cox Private Networks
 - CP Communications
 - CPChem (Chevron Phillips Chemical)
 - CPFL Energia
 - CPI (Center for Process Innovation)
 - CPQD (Center for Research and Development in Telecommunications, Brazil)
 - CR (China Resources) Cement
 - CR Gas (China Resources Gas Group)
 - CRA (Communications Regulatory Authority, Qatar)
 - Cradlepoint
 - CRC (Communications Research Centre Canada)
 - Creanord
 - CrisisGo
 - CritiComms
 - CROSSCALL
 - Crown Castle International Corporation
 - CRSC (China Railway Signal & Communication Corporation)
 - CRTVG (Corporacion Radio e Television de Galicia)
 - Crystal Palace Football Club
 - CS Corporation
 - CSA (Canadian Space Agency)
 - CSC (China Steel Corporation)
 - CSCEC (China State Construction Engineering Corporation)
 - CSG (China Southern Power Grid)
 - CSG Systems International
 - CSSC (China State Shipbuilding Corporation)
 - CSSG (China Space Sanjiang Group)
 - CST (Communications, Space & Technology Commission, Saudi Arabia)
 - CTAG (Automotive Technology Center of Galicia)
 - CTC (Chubu Telecommunications Company)
 - CTC (ITOCHU Techno-Solutions)
 - CTG (Celestia Technologies Group)
 - CTIA
 - CTK (Carl-Thiem Hospital Cottbus)
 - CTL
 - CTOne
 - CTPA (Central Texas Purchasing Alliance)
 - CTR (Central Corporation)
 - CTS (Communication Technology Services)
 - CTS Corporation
 - CTTC (Catalan Telecommunications Technology Center)
 - CTU (Czech Technical University in Prague)
 - CTU (Czech Telecommunication Office)
 - CTY (Japan)
 - CU Boulder (University of Colorado Boulder)
 - Cubic Corporation
 - Cubic Defence Australia
 - Cubic Telecom
 - Cummins
 - Cumucore
 - Curtin University
 - CUSD (Collinsville Community Unit School District) 10
 - Custom MMIC
 - CW (Cambridge Wireless)
 - Cyber Forza
 - CybertelBridge
 - Cyderes
 - Cyient
 - Cyrus Technology
 - Czech Ministry of Interior
 - CZU (Czech University of Life Sciences Prague)
 - D2 Technologies
 - Dabie Mountain Regional Medical Center
 - Daeduk University
 - DAEL Group
 - Daeyoun System Company
 - DAF Trucks
 - Dahua Technology
 - Daikin Industries
 - Dali Wireless
 - Dallas ISD (Independent School District)
 - Dallas Love Field Airport
 - Dalrymple Bay Coal Terminal
 - Dalton Utilities
 - DAMM Cellular Systems
 - Danaos Shipping
 - Danfoss
 - Dang Hong Qi Tian
 - Danish National Police
 - DARS (Slovenian Motorway Company)
 - DART (Dallas Area Rapid Transit)
 - Databahn Solutions
 - DATACOM
 - Datagear
 - Datang Renewable Power
 - Datang Telecom Technology & Industry Group
 - Dataport
 - DataSoft
 - Datatec
 - Datong Coal Mining Group
 - Datora Group
 - Datwyler IT Infra
 - DB (Deutsche Bahn)
 - DB Cargo
 - DB Schenker
 - DBcom
 - DBK (Dansk Beredskabskommunikation)
 - dbSpectra
 - DDR.Live
 - De Beers Group
 - De Grey Mining
 - Debswana Diamond Company
 - Deendayal Port Authority
 - DeepOcean
 - DeepSig
 - DeepSight AI Labs
 - Defence Australia (Department of Defence)
 - Defra (Department for Environment, Food and Rural Affairs, United Kingdom)
 - Dejero Labs
 - DeKalb Police Department
 - DEKRA
 - Del Conca USA
 - Dell Technologies
 - Delmarva Power and Light Company (Exelon)
 - Deloitte
 - Delta Air Lines
 - Delta Electronics
 - DEMAG (Demag Cranes & Components)
 - DEME Group
 - DENGYO (Nihon Dengyo Kosaku)
 - Dense Air
 - Denso Corporation
 - Detecon
 - Detroit Lions
 - Deutsche Funkturm
 - Deutsche Messe
 - DEWA (Dubai Electricity & Water Authority)
 - DFL (German Football League)
 - DFW (Dallas Fort Worth) International Airport
 - DGS (Digital Global Systems)
 - DHL
 - DIAKINISIS
 - Dialog Axiata
 - Dialogic
 - Diamond Communications
 - Diamond Offshore Drilling
 - DIGI Communications
 - Digi International
 - Digicert
 - Digis Squared
 - Digita
 - Digital Ally
 - Digital Catapult
 - Digital Enhancement
 - DigitalBridge Group
 - DigitalC
 - DigitalRoute
 - Digitata
 - DigitGate (Nanjing DigitGate Communication Technology)
 - Dimetor
 - Disc Golf Network
 - Disc Golf Pro Tour
 - DISH Network Corporation
 - DKK (Denki Kogyo)
 - D-Link Corporation
 - DLR (German Aerospace Center)
 - DMG Mori
 - DMI
 - DMTCL (Dhaka Mass Transit Company Limited)
 - DNA (Finland)
 - DNB (Digital Nasional Berhad)
 - DND (Department of National Defence, Canada)
 - DNP (Dai Nippon Printing)
 - DOA (Department of Airports, Thailand)
 - DoCoMo Business
 - DOK'ICI
 - DOK-ING
 - Dominion Energy
 - Dongyi Group Coal Gasification Company
 - Doodle Labs
 - Doogee
 - Doosan Corporation
 - Dorna Sports
 - Dortmund Fire Brigade
 - DoT (Department of Telecommunications, India)
 - Dow
 - Doyle Shipping Group
 - DP World
 - DPOL (Dos Palos Oro Loma) Joint Unified School District
 - DragonWave-X
 - Drakontas
 - DRDC (Defence Research and Development Canada)
 - Dreamtilt
 - DriveNets
 - Drone Aviation
 - DroneSense
 - Druid Software
 - DRZ (German Rescue Robotics Center)
 - DSA (Dynamic Spectrum Alliance)
 - DSB (Directorate for Civil Protection, Norway)
 - DSBJ (Suzhou Dongshan Precision Manufacturing)
 - dstelecom
 - DSTL (Defence Science and Technology Laboratory, United Kingdom)
 - DT (Deutsche Telekom)
 - DTAC (Total Access Communication)
 - du (EITC - Emirates Integrated Telecommunications Company)
 - Dubai Customs
 - Dubai Police
 - Dublin City Council
 - Dublin Fire Brigade
 - Duisburger Hafen
 - Duke Energy
 - Duke University
 - Dundee City Council
 - Duoc UC
 - Duons
 - duotec
 - Durabook (Twinhead International Corporation)
 - Duubee
 - DXC Technology
 - DZS
 - E.ON
 - EA Networks (Electricity Ashburton)
 - Eahison Communication
 - EANTC
 - Eastcom (Eastern Communications)
 - Easycom (Shenzhen Easycom Electronics)
 - EASYMETERING
 - EasyMile
 - E-Band Communications
 - EBINAX (Ebina Denka Kogyo)
 - e-BO Enterprises
 - EBRCSA (East Bay Regional Communications System Authority)
 - EBU (European Broadcasting Union)
 - ECE (European Communications Engineering)
 - Echelon Edge
 - EchoStar Corporation
 - Ecochip
 - Ecom Instruments
 - Econet Wireless Zimbabwe
 - Ecrio
 - ECT (Hutchison Ports ECT Rotterdam)
 - Edesur Dominicana
 - EDF
 - EDF Renewables
 - Edge Networks
 - Edge UOL
 - Edgecore Networks
 - EdgeQ
 - Edgybees
 - E-Distribucion
 - E-Distribuzione
 - Ednetics
 - edotco Group
 - EDP (Energias de Portugal)
 - EDX Wireless
 - Edzcom
 - EE
 - EEI (Edison Electric Institute)
 - Eesti Energia
 - Efacec
 - Effnet
 - EGC International
 - Egyptian Ministry of Defense
 - EHang (Guangzhou EHang Intelligent Technology)
 - eHills Corporation
 - EHIME CATV
 - Eiffage Energie Systemes
 - Eigencomm
 - eino
 - EION Wireless
 - Eir (Eircom)
 - Ekinops
 - Ekobot
 - El Corte Ingles
 - Elbit Systems
 - Eldorado Gold
 - ElectraNet
 - Electricity Canada (Canadian Electricity Association)
 - Elefante Group
 - Elefsis Shipyards
 - Eleko (Spain)
 - Elektro Gorenjska
 - Element Materials Technology
 - Elgaugol
 - E-Lins Technology
 - Elisa
 - Elisa Estonia
 - Elisa Polystar
 - Elistair
 - Elsight
 - Elta Systems
 - Eltex
 - ELUON Corporation
 - ELVA-1
 - Emblasoft
 - Embraer
 - Embrapa (Brazilian Agricultural Research Corporation)
 - Embratel
 - EMCO (East Mining Company)
 - Emera
 - Emerging Prairie
 - Emerson
 - Emitel
 - Emmerson Resources
 - EMnify
 - Emory Healthcare
 - EMS (Electronic Media Services)
 - ENA (Education Networks of America)
 - ENA (Energy Networks Association)
 - ENACOM (National Communications Agency, Argentina)
 - Enagas
 - Encore Networks
 - Endeavour Energy
 - Endesa
 - Endress+Hauser
 - Enea
 - Enecom (Energia Communications)
 - Enel
 - ENENSYS Technologies
 - Energa-Operator
 - Energex
 - Energizer Mobile (Avenir Telecom)
 - Energy School Service Center
 - EnerSys
 - EnerTribe
 - Eneva
 - Enexis
 - ENLETS (European Network of Law Enforcement Technology Services)
 - ENNA (Energia Naturalis) Group
 - Entel (Chile)
 - Entel (United Kingdom)
 - ENTELEC (Energy Telecommunications and Electrical Association)
 - Entra Energy
 - Entropia
 - Entropy Solution
 - ENWAY
 - EOG Resources
 - Eoptolink Technology
 - EOS (Electro Optic Systems)
 - Epiroc
 - EPR (Energy Project Resources)
 - EPRI (Electric Power Research Institute)
 - Equiendo
 - Equinor
 - ERA (European Union Agency for Railways)
 - Eramet
 - Eravant (SAGE Millimeter)
 - Ergon Energy
 - Ericsson
 - Erillisverkot (State Security Networks Group, Finland)
 - Ero Copper
 - Errigal
 - ErvoCom
 - ESA (European Space Agency)
 - ESB Networks
 - Escambia Community Utilities
 - Eseye
 - Esharah Etisalat Security Solutions
 - Eskom
 - Esnet
 - ESO EAD (Electricity System Operator, Bulgaria)
 - E-Space
 - ESR Pollmeier
 - Estalky (K-Mobile Technology)
 - ETELM
 - eTera (Sinotech R&D Group)
 - Ethernity Networks
 - Etherstack
 - Etisalat Group (e&)
 - ETRI (Electronics & Telecommunications Research Institute, South Korea)
 - ETSI (European Telecommunications Standards Institute)
 - Etteplan
 - EUCAST
 - EURECOM
 - Eureka
 - EuroChem Group
 - Eurofiber
 - Eurofins E&E (Electrical and Electronics)
 - EUROGATE
 - Eurona
 - European University of Madrid
 - Eurotech
 - Euskadi Technology Park
 - EUTC (European Utilities Telecom Council)
 - Eutelsat Group
 - EUWENA (European Users of Enterprise Wireless Networks Association)
 - Eventide Communications
 - Everbridge
 - Evergy
 - Evolution Mining
 - Evolve Cellular
 - Evonik Industries
 - evo-rail
 - EVRAZ
 - EWA (Electricity and Water Authority, Bahrain)
 - EWA (Enterprise Wireless Alliance)
 - EWG (East-West Gate) Intermodal Terminal
 - Ewha Womans University Mokdong Hospital
 - Ewing Police Department
 - Exacom
 - Exaware
 - Excelcar
 - Excelerate Technology
 - EXEO Group
 - EXFO
 - Exium
 - EXOR International
 - Expandium
 - Expeto
 - Exquisite Automotive Systems
 - Extenet
 - Extreme Networks
 - Exxaro
 - ExxonMobil
 - EY (Ernst & Young)
 - Eyecom Telecommunications Group
 - EZcon Network
 - F2G (Far-Together) Solutions
 - F5
 - Facens University Center
 - Faena Hotel & Forum
 - Fairfield Medical Centre (Liverpool)
 - Fairspectrum
 - Fairwaves
 - FANUC
 - Faraday Technology Corporation
 - Faroe Islands Police
 - Fastback Networks
 - Fastpartner
 - FAU (Friedrich-Alexander University) Erlangen-Nurnberg
 - FAW Group
 - FCCA (Forestry Conservation Communications Association)
 - FCNT (Fujitsu Connected Technologies)
 - FCPS (Fredericksburg City Public Schools)
 - FCTV (Fukui Cable Television)
 - Federal Engineering
 - Federated Wireless
 - FedEx
 - FEFU (Far Eastern Federal University)
 - Fenix Group
 - FERMAX
 - Ferrexpo
 - Ferrotec
 - Ferrovial
 - Festipay
 - Festo
 - FET (Far EasTone Telecommunications)
 - FFC (French Cycling Federation)
 - FFG (Fair Friend Group)
 - FFI (Defense Research Establishment, Norway)
 - FGC (Catalan Government Railways)
 - FH Dortmund (Dortmund University of Applied Sciences and Arts)
 - FiberHome Technologies
 - FIBERSTAMP
 - Fibocom
 - Fibrolan
 - FiduciaEdge Technologies
 - Fieldlab Evenementen (Fieldlab Events)
 - FIH Mobile
 - FII (Foxconn Industrial Internet)
 - Filtronic
 - Finavia
 - FINEP (Brazilian Innovation Agency)
 - Finferries (Suomen Lauttaliikenne)
 - Fingu (Wuhan Fingu Electronic Technology)
 - FinnHEMS (Finnish Helicopter Emergency Medical Services)
 - Finning
 - Finnish Border Guard
 - Finnish Defense Forces
 - Finnlines
 - Fiplex Communications
 - Fira (Finland)
 - Fira de Barcelona
 - Firecell
 - First Quantum Minerals
 - FIRST RF Corporation
 - FirstEnergy
 - FirstGroup
 - FirstNet (First Responder Network) Authority
 - FirstPoint Mobile Guard
 - FIS (International Ski Federation)
 - Fishtech Group
 - Fiskarheden
 - FIT (Foxconn Interconnect Technology)
 - Fivecomm
 - Fives Group
 - FLARE SYSTEMS (Japan)
 - Flash Networks
 - Flash Private Mobile Networks
 - Flectory
 - Fleet Complete
 - Flex
 - Flex Logix Technologies
 - Flexitron Group
 - Flightcell International
 - FLIR Systems
 - Flo Networks
 - floLIVE
 - FlowCentric Technologies
 - FluidOne
 - Flymotion
 - FMBE (FMB Engineering)
 - FMJ Group
 - FMV (Defense Materiel Administration, Sweden)
 - Fontana Unified School District
 - FOODPOLIS (Korea Food Industry Cluster Promotion Agency)
 - Ford Motor Company
 - Formosa Plastics Transport
 - Formula One
 - Foroya Tele (Faroese Telecom)
 - Forsk
 - Forsvarsmateriell (Norwegian Defense Materiel Agency)
 - Fort Worth ISD (Independent School District)
 - Fortescue Metals Group
 - Fortinet
 - FortisAlberta
 - Fortress Solutions
 - Fortum
 - Foshan Haitian
 - Four-Faith Communication Technology
 - FOX Sports
 - Foxconn (Hon Hai Technology Group)
 - FPInnovations
 - France Televisions
 - Frankfurt University Hospital
 - Frankfurt University of Applied Sciences
 - Franklin Wireless
 - Fraport
 - Fraunhofer FOKUS (Institute for Open Communication Systems)
 - Fraunhofer HHI (Heinrich Hertz Institute)
 - Fraunhofer IAO (Institute for Industrial Engineering and Organization)
 - Fraunhofer IEM (Institute for Mechatronic Systems Design)
 - Fraunhofer IIS (Institute for Integrated Circuits)
 - Fraunhofer IOSB-INA (Application Center for Industrial Automation)
 - Fraunhofer IPA (Institute for Manufacturing Engineering and Automation)
 - Fraunhofer IPK (Institute for Production Systems and Design Technology)
 - Fraunhofer IPT (Institute for Production Technology)
 - Fraunhofer-Gesellschaft
 - Fred. Olsen Cruise Lines
 - Free Mobile
 - Free Pro
 - FreeBit Group
 - Freedom Mobile
 - FreedomFi
 - Freeeway
 - freenet Group
 - Freeport of Riga Authority
 - Freeport-McMoRan
 - French Air Force
 - French Army
 - French Ministry of Armed Forces
 - French Ministry of Interior
 - Frequencz
 - Frequentis
 - Freshwave Group
 - FRNSW (Fire and Rescue New South Wales)
 - Frog Cellsat
 - FrontierSI
 - FRTek
 - FSG (Field Solutions Group)
 - FTI Engineering Network
 - FTIA (Finnish Transport Infrastructure Agency)
 - FTS (Formula Telecom Solutions)
 - Fudan University
 - Fujikura
 - Fujitsu
 - Fundacion SSG
 - Funk-Electronic Piciorgros
 - Funkwerk
 - Furukawa Electric
 - Furuno Electric
 - FUSD (Fresno Unified School District)
 - Future Technologies Venture
 - Fuzhou Metro
 - Fuzhou Port
 - FYCMA (Malaga Trade Fair and Congress Center)
 - G REIGNS
 - G+D (Giesecke+Devrient)
 - G3 Global
 - Galati Port
 - Galilee Medical Center
 - Galtronics
 - Gamma Nu
 - Gammon Construction
 - Gandi
 - Gapwaves
 - Garderos
 - GASAG
 - Gazprom Neft
 - Gazprom Space Systems
 - GAZ-SYSTEM
 - GCF (Global Certification Forum)
 - GCT Semiconductor
 - GD (General Devices)
 - Gdansk Tech (Gdansk University of Technology)
 - GDIT (General Dynamics Information Technology)
 - GDRFA-Dubai (General Directorate of Residency and Foreigners Affairs, Dubai)
 - GE (General Electric)
 - GE Digital
 - GE HealthCare
 - GE Renewable Energy
 - GE Vernova
 - Geely Auto
 - Geisinger
 - GEKA Telecom
 - Gemtek Technology
 - General Dynamics
 - General Dynamics Mission Systems
 - Generalitat Valenciana
 - Genesis Group
 - GENEViSiO
 - Genew Technologies
 - Genmix Technology
 - GEO DATA
 - George Mason University
 - Geotab
 - GeoTraq
 - Geoverse (Commnet Wireless)
 - GER4TECH
 - Gerdau
 - Gestamp
 - Getac Technology Corporation
 - Gewei (Wuhan Gewei Electronic Technology)
 - GF (GlobalFoundries)
 - GF Machining Solutions
 - GFO Investments
 - GGD (Municipal Health Service) Brabant-Zuidoost
 - Ghent Fire Department
 - Gidarjil Development Corporation
 - GIGABYTE Technology
 - Gigalane
 - GIGALIGHT
 - Gigamon
 - GigaMonster
 - GigaTera Communications
 - GigSky
 - Gilat Satellite Networks
 - GL Communications
 - Glanbia
 - Glencore
 - Global Omnium
 - Global Telecom
 - Globalgig
 - Globalstar
 - Globalvia
 - Globe Telecom
 - Globe Tracker
 - Glocall Telecoms
 - Glydways
 - GM (General Motors)
 - GMO Internet Group
 - GMP (Green Mountain Power)
 - GMR Group
 - GO Internet (Italy)
 - Gogo Business Aviation
 - Gold Fields
 - Gold Road Resources
 - GoldNet
 - Goodman Telecom Services
 - Goodmill Systems
 - Google
 - Goosetown Communications
 - Gore (W. L. Gore & Associates)
 - Gosuncn Group
 - GosuncnWelink Technology
 - Gotting KG
 - GPMM (Grand Port Maritime de Marseille-Fos)
 - Grain Management
 - Grand Port Maritime de Dunkerque
 - Grange Resources
 - Granit Enterprise (Belarus)
 - Granite Telecommunications
 - Grant County Sheriff's Office (Wisconsin)
 - Grant Thornton
 - Grape One
 - Great Wall Motor Company
 - Gree Electric Appliances
 - Greek Police
 - Green Communications
 - Green Packet
 - Greenet (Netherlands)
 - Green-GO Digital (ELC Lighting)
 - GreenPalm (Hangzhou GreenPalm Technology)
 - GrenTech
 - Grid Communications
 - GridGears
 - Grolleau
 - Groningen Seaports
 - Groundhog Technologies
 - Groupe ADP
 - Groupe Remabec
 - GroupTalk
 - Grundfos
 - Grupo Alava
 - Grupo Globo
 - Grupo ICE
 - Grupo Mexico
 - GS Lab (Great Software Laboratory)
 - GSA (Global Mobile Suppliers Association)
 - GSI (GS Instech)/GST (GS Teletech)
 - GSMA (GSM Association)
 - GTA - Global Technology Associates (Kelly Telecom)
 - GTA (Global Technology Associates)
 - GTAA (Greater Toronto Airports Authority)
 - GTRK Vladivostok (Vladivostok State TV and Radio Company)
 - Guangdong Provincial People's Hospital
 - Guangdong Yue Xun Industrial
 - Guangxi Liuzhou Iron and Steel Group
 - Guangzhou 120 (Guangzhou Emergency Medical Center)
 - Guangzhou Baiyun International Airport
 - Guangzhou Gosuncn Robot
 - Guangzhou Metro
 - Guangzhou Port Group
 - Guardforce Security (Thailand)
 - Guardia Civil (Spanish Civil Guard)
 - Guardia Urbana de Barcelona (Barcelona Urban Guard)
 - GuardStack
 - Guavus
 - Guerrilla RF
 - Guident
 - Guiyang Metro
 - Guiyang Public Security Bureau
 - Guizhou Tyre
 - GUTMA (Global UTM Association)
 - GVB (Amsterdam Transport Company)
 - GWTCA (Government Wireless Technology & Communications Association)
 - GXC (Formerly GenXComm)
 - HAAS Alert
 - Haasrode Research Park
 - Hafen Trier (Trierer Hafengesellschaft)
 - Haier
 - Hainan Meilan International Airport Company
 - Haivision
 - HAKOM (Croatian Regulatory Authority for Network Industries)
 - Halton Regional Police Service
 - Halys
 - Hamburg Port Authority
 - Hamburger Containerboard
 - HaminaKotka Satama
 - Hampshire Fire & Rescue Service
 - Hampton Valley Forge Volunteer Fire Department
 - Hancock Prospecting
 - Hancock State Prison
 - Hancom MDS
 - Handheld Group
 - Handsfree Group
 - Hangzhou Boss Electric Appliance
 - Hangzhou Metro
 - Hangzhou Xiaoshan International Airport
 - Hanjin Busan Newport
 - Hankyu Hanshin Holdings
 - Hansen Technologies
 - Hanshin Cable Engineering
 - Hanshin Electric Railway
 - Hanswell
 - Hanwha Defense
 - Hanwha Techwin
 - HAPSMobile
 - Harbor Max
 - HarborLink Network
 - HarborTech Mobility
 - HARMAN DTS (Digital Transformation Solutions)
 - HAROPA PORT
 - HARTING
 - Harvilon (Shenzhen Harvilon Technology)
 - Havelport Berlin
 - Haventure
 - Hawaiian Electric
 - Hawe Telekom
 - Hawk Networks (Althea)
 - Haystax Technology
 - Hazama Ando Corporation
 - HBFEC (Hebei Far East Communication System Engineering)
 - HCLTech (HCL Technologies)
 - HCU (HafenCity University Hamburg)
 - HD Hyundai Heavy Industries
 - Heathgate Resources
 - Heathrow Commercial Telecoms
 - Hebei Port Group
 - Hefei Metro
 - HEIA-FR (School of Engineering and Architecture of Fribourg)
 - Helios (Fujian Helios Technologies)
 - Helios Park Hospital Leipzig
 - Helium Foundation
 - Hellas Gold
 - Hellas Sat
 - Henan Energy & Chemical Industry Group
 - Henan Province Airport Group
 - Henan Shenhuo Group
 - Hengshen Group
 - Hengtong (Jiangsu Hengtong Optic-Electric)
 - Hengxin (Jiangsu Hengxin Technology)
 - Henkel
 - HERE Technologies
 - Heriot-Watt University
 - Heropolis
 - Heroya Industrial Park
 - Herystorm (Guangzhou Herystorm Technology)
 - HES-SO (University of Applied Sciences and Arts Western Switzerland)
 - Het Vertrouwde Dorp
 - Hexagon
 - Hexagon Communication (Suzhou Hexagon Communication Technologies)
 - Hexagon Wireless
 - HFCL
 - HFR Networks
 - HFT Stuttgart (Stuttgart University of Applied Sciences)
 - HG Genuine
 - HGTECH (Huagong Technology)
 - HHLA Sky
 - Hibiki Seiki
 - Highstreet Technologies
 - Highway9 Networks
 - HII (Huntington Ingalls Industries)
 - Hikvision (Hangzhou Hikvision Digital Technology)
 - Hilinks Technology
 - Hillebrand Coating (Rudolf Hillebrand)
 - Hip Hing Engineering
 - HipLink Software
 - Hiroshima Gas
 - Hiroshima University
 - Hirschmann
 - Hisense
 - HiSilicon Technologies
 - HISPASAT
 - Hitachi
 - Hitachi Construction Machinery
 - Hitachi Energy
 - Hitachi Kokusai Electric
 - Hitachi Rail
 - Hitachi Vantara
 - HKCEC (Hong Kong Convention and Exhibition Center)
 - HKMPB (Hong Kong Maritime and Port Board)
 - HKPC (Hong Kong Productivity Council)
 - HKT
 - HKTech (Howking Tech)
 - HKUST (Hong Kong University of Science and Technology)
 - HLS (HARD-LINE Solutions)
 - HMD Global
 - HMDC (Hibernia Management and Development Company)
 - HMF Smart Solutions
 - HMI Technologies
 - HMS Networks
 - Hoban Construction
 - HOGENT (University College Ghent)
 - Hohhot Public Security Bureau
 - Hoimyung ICT
 - Hokkaido Electric Power Company
 - Hokkaido University
 - Holland Ridge Farms
 - Holmen Iggesund
 - Hologram
 - HoME (Hochschule Merseburg University of Applied Sciences)
 - Honbridge Holdings
 - Honda Motor Company
 - Honeywell International
 - Hong Kong Hospital Authority
 - Hong Kong Police Force
 - Hongdian Corporation
 - HONOR
 - HORIBA MIRA
 - Horizon Powered
 - Hospital Clinic de Barcelona
 - Hospital das Clinicas (Sao Paulo)
 - Hospital Quironsalud Malaga
 - Hospital Universitario de La Princesa
 - Hotel Star (China)
 - Houari Boumediene Airport
 - Houston Methodist
 - Hoverfly Technologies
 - Howard University
 - Howest University of Applied Sciences
 - HP
 - HPA (Hamburg Port Authority)
 - HPE (Hewlett Packard Enterprise)
 - HQT (Shenzhen HQT Science and Technology)
 - HSC (Hughes Systique Corporation)
 - HSG (Haslam Sports Group)
 - Hsinchu City Fire Department
 - HSU/UniBw H (Helmut Schmidt University/University of the Federal Armed Forces Hamburg)
 - HTC Corporation
 - HTX (Home Team Science & Technology Agency, Singapore)
 - Huahuan (Beijing Huahuan Electronics)
 - Hualapai Nation Police Department
 - Huaptec
 - Huawei
 - Hub One (Groupe ADP)
 - HUBER+SUHNER
 - Hubraum
 - HUCOM Wireless
 - Hudbay Minerals
 - Hughes Network Systems
 - Human Horizons
 - Humanitas Research Hospital
 - Hunan Highway Police
 - Hungarian Ministry of Interior
 - Hunter Technology
 - Huoshenshan Hospital
 - Huozhou Coal & Electricity Group
 - Hurst Greenery
 - HUS (Helsinki University Hospital)
 - Husky Terminal and Stevedoring
 - HUST (Huazhong University of Science and Technology)
 - Hutchison Drei Austria
 - Hutchison Ports
 - HXI (Renaissance Electronics & Communications)
 - Hyatt Hotels Corporation
 - Hydro One
 - Hydro Ottawa
 - Hydro-Quebec
 - Hyperbat
 - Hypha (Wireless Innovation)
 - Hyster-Yale Materials Handling
 - Hytec Inter
 - Hytera Communications
 - Hyundai AutoEver
 - Hyundai Construction Equipment
 - Hyundai Doosan Infracore
 - Hyundai E&C (Engineering & Construction)
 - Hyundai Mipo Dockyard
 - Hyundai Mobis
 - Hyundai Motor Group
 - Hyundai Robotics
 - Hyundai Rotem
 - i.safe MOBILE
 - i2i Systems
 - IAG (International Airlines Group)
 - IAI (Israel Aerospace Industries)
 - iBASIS
 - IBC (International Broadcasting Convention)
 - IBCH PAS (Institute of Bioorganic Chemistry, Polish Academy of Sciences)
 - Iberdrola
 - IBM
 - IBO Technology Company
 - IB-RED
 - iBwave Solutions
 - Icade
 - iCana
 - ICASA (Independent Communications Authority of South Africa)
 - ICBC (Industrial and Commercial Bank of China)
 - ICCRA (International Critical Control Rooms Alliance)
 - Ice Mobility
 - Ice Norway
 - iCERT (Industry Council for Emergency Response Technologies)
 - ICG (Icelandic Coast Guard)
 - ICL Group
 - ICN (Imizu Cable Network)
 - ICOE (Imperial County Office of Education)
 - Icom
 - Iconec
 - iConNext
 - ICS Holding
 - ICU Technologies
 - ID:TOLU (Research and Development Laboratory of Tolu)
 - iDAQS
 - IDEMIA
 - Idemitsu
 - IDF (Israel Defense Forces)
 - IDY Corporation
 - IE University
 - IEC (Illinois Electric Cooperative)
 - IEEE (Institute of Electrical and Electronics Engineers)
 - IETF (Internet Engineering Task Force)
 - ifak (Institute for Automation and Communication)
 - IFEMA
 - IFLY Electronics
 - ifm
 - IFT (Federal Institute of Telecommunications, Mexico)
 - IGO (Australia)
 - IGOF (International Governmental Operators' Forum)
 - IHG (InterContinental Hotels Group)
 - IHI Corporation
 - IHU Strasbourg (Strasbourg Institute of Image-Guided Surgery)
 - IIJ (Internet Initiative Japan)
 - IISc (Indian Institute of Science)
 - IISI (International Integrated Systems, Inc.)
 - IIT (Indian Institute of Technology) Bombay
 - IIT (Indian Institute of Technology) Delhi
 - IIT (Indian Institute of Technology) Hyderabad
 - IIT (Indian Institute of Technology) Kanpur
 - IIT (Indian Institute of Technology) Madras
 - IKD
 - IKIN
 - Iliad Group
 - IM Technology
 - Imagin'Office
 - IMAmt (Mato Grosso Cotton Institute)
 - IMDA (Infocomm Media Development Authority of Singapore)
 - Imec
 - Imperial Oil
 - IMPTT
 - IMR (Irish Manufacturing Research)
 - IMSC (Interim Maori Spectrum Commission)
 - IMT (Institut Mines-Telecom)
 - IMT-2030 (6G) Promotion Group
 - Inaba Denki Sangyo
 - INACAP
 - Inatel (National Institute of Telecommunications, Brazil)
 - InCoax Networks
 - Indian Army
 - Indian Railways
 - Indianapolis Fire Department
 - Indianapolis Motor Speedway
 - Indotel (Dominican Institute of Telecommunications)
 - Indra
 - InDro Robotics
 - INDT (Institute of Technological Development, Brazil)
 - Industrial Minera Mexico
 - iNET (Infrastructure Networks)
 - INEX Microtechnology
 - Infineon Technologies
 - Infinera
 - InfiNet Wireless
 - InfiniG
 - Infinite Electronics
 - InfoLink USA
 - Infomark Corporation
 - Infoport
 - Infosys
 - Infovista
 - Ingram Micro
 - InHand Networks
 - INL (Idaho National Laboratory)
 - Inland Cellular
 - Inmanta
 - Inmarsat
 - Inner Mongolia Intelligent Coal Company
 - Innertron
 - InnoGence Technology
 - InnoLight Technology
 - Innonet
 - Innosuisse (Swiss Innovation Agency)
 - Innovalia
 - Innovate5G
 - Innovation Cluster 5G Berlin
 - Innovile
 - InnoWireless
 - INPEX
 - inq
 - In-Q-Tel
 - Inria (French National Institute for Research in Digital Science and Technology)
 - Inrico Technologies
 - Inseego Corporation
 - Inspur
 - Insta Group
 - Instacom
 - Instant Connect
 - InstantCom (Romania)
 - INSTEP (Institut Teknologi Petroleum PETRONAS)
 - Institute of Science Tokyo (Formerly Tokyo Medical and Dental University)
 - INSYS icom (INSYS Microelectronics)
 - Intec E&C
 - Intel Corporation
 - Intelbras
 - Intelliport Solutions
 - Intelsat
 - Intenna Systems
 - InterDigital
 - INTERLEV
 - Internet Institute (Slovenia)
 - Interop Technologies
 - InterTalk Critical Information Systems
 - Intracom Telecom
 - Intrado Corporation
 - Intrepid Networks
 - Inventec Corporation
 - Invest Ottawa
 - INWIT (Infrastrutture Wireless Italiane)
 - INZU Group
 - IOH (Indosat Ooredoo Hutchison)
 - IoT4Net
 - IoTAS (IoT & Approval Solutions)
 - Iowa State University
 - IP Access International
 - IP Infusion
 - IPAGEON
 - IPC Coal
 - IP-Connected
 - IPITEK (Integrated Photonics Technology)
 - IPL (Incitec Pivot Limited)
 - IPLOOK Technologies
 - iPosi
 - IPT (Institute for Technological Research, Sao Paulo)
 - IPT (Internet para Todos) Peru
 - Iradio Electronics
 - Iraqi Ministry of Defense
 - IRCCS San Raffaele Hospital
 - Iren
 - IRFU (Irish Rugby Football Union)
 - Iridium Communications
 - Irkutsk Oil Company
 - IronYun
 - Irteya (Russia)
 - ISA (International Society of Automation)
 - Isala Hospital
 - ISCO International
 - iSea
 - ISED (Innovation, Science and Economic Development Canada)
 - Iserlohner Werkstatten
 - Ishizaka Sangyo
 - ISIS Logiciels & Systemes (ILS Technologies)
 - ISL Networks (Japan)
 - ISP Supplies
 - Israel Fire and Rescue Authority
 - Israel Police
 - Israel Railways
 - Israeli Ministry of Communications
 - Israeli Ministry of Defense
 - IS-Wireless
 - IT Aveiro (Instituto de Telecomunicacoes, Aveiro)
 - ITA (Aragon Institute of Technology)
 - Italian Army
 - Italian Ministry of Defense
 - Italian Ministry of Interior
 - Italtel
 - ITCEN
 - ITDRC (Information Technology Disaster Resource Center)
 - I-TEC Solutions
 - ITN (Independent Television News)
 - ITRI (Industrial Technology Research Institute, Taiwan)
 - Itron
 - ITU (International Telecommunication Union)
 - ITU (Istanbul Technical University)
 - ITUMA
 - IVO (Valencian Institute of Oncology)
 - IWT (Innovative Wireless Technologies)
 - J:COM (Jupiter Telecommunications)
 - Jabil
 - JACS Solutions
 - Jacto
 - JAL (Japan Airlines)
 - Jalles Machado
 - James Hutton Institute
 - Jan De Nul Group
 - Japanese Ministry of Defense
 - JATONTEC (Jaton Technology)
 - Jazz (Pakistan Mobile Communications)
 - JBG SMITH Properties
 - JCI (Japan Communications Inc.)
 - JD Logistics
 - Jellinbah Group
 - JEMS (Japan EM Solutions)
 - JET Connectivity
 - Jettech Networks
 - Jezetek (Sichuan Jiuzhou Electric Group)
 - JFE Engineering
 - JFE Steel
 - Jiangsu Gian Technology
 - Jiangxi Copper Corporation
 - Jiaxun Feihong (Beijing Jiaxun Feihong Electrical)
 - Jinan Metro
 - Jinan USR IoT Technology
 - Jinan Yaoqiang International Airport
 - Jinchuan Group
 - Jinneng Holding Group
 - Jio Platforms
 - JIT (JI Technology)
 - JMA Wireless
 - JMPD (Johannesburg Metropolitan Police Department)
 - JNT (Jakobstadsnejdens Telefon)
 - Joao Goncalves Zarco Secondary School
 - John Deere
 - Johns Hopkins University
 - Johnson Controls
 - JOMOO
 - Jordanian Armed Forces
 - JOTS (Joint Operators Technical Specification) Forum
 - JOUAV
 - Joyson PlasTec
 - JPC Connectivity
 - JPS (Jackson Public Schools)
 - JPS Interoperability Solutions
 - JQL Technologies
 - JR East (East Japan Railway Company)
 - JRC (Japan Radio Company)
 - JRC (Joint Radio Company)
 - JRP (Japan Race Promotion)
 - JSC Ingenium
 - JT IoT
 - JTA (Jacksonville Transportation Authority)
 - JTC Corporation
 - JTOWER
 - Juniper Networks
 - Junkosha
 - Juvare
 - JVCKENWOOD Corporation
 - K LINE (Kawasaki Kisen Kaisha)
 - KAC (Korea Airports Corporation)
 - Kacific Broadband Satellites
 - Kaelus
 - Kaga Cable Television
 - KAI (Korea Aerospace Industries)
 - Kaifa (Shenzen Kaifa Technology)
 - Kailuan Group
 - Kaiser Permanente
 - Kajeet
 - Kalamazoo Resources
 - Kalmar
 - Kaloom
 - Kalray
 - KAMAZ
 - Kanazawa Cable
 - Kansai Electric Power Company
 - Kantonspolizei St.Gallen (Cantonal Police of St. Gallen)
 - Kantonspolizei Zurich (Cantonal Police of Zurich)
 - Kaohsiung City Government
 - Kaohsiung City Police Department
 - Kaohsiung Exhibition Center
 - Karara Mining
 - Karrier One
 - KATCH Network
 - Katela Networks
 - KATIM
 - Kaupunkiliikenne (Metropolitan Area Transport)
 - KAUST (King Abdullah University of Science and Technology)
 - Kawasaki Heavy Industries
 - KAZ Minerals
 - Kazan Metro
 - Kazzinc
 - KBR
 - KBT (Kenbotong Technology)
 - KCC (Korea Communications Commission)
 - KCCS (Kyocera Communication Systems)
 - KCCTech
 - Kcell
 - KCOE (Kings County Office of Education)
 - KDDI Corporation
 - KDDI Thailand
 - KDSG (Kaduna State Government)
 - Keikyu Corporation (Keikyu Electric Railway)
 - Keio University
 - Kelly Services
 - Kementerian Kominfo (Ministry of Communication and Information Technology, Indonesia)
 - Kemin Satama
 - Kenyan Police Service
 - KEPCO (Korea Electric Power Corporation)
 - Key Bridge Wireless
 - Keysight Technologies
 - Keystone Metrofiber
 - KFTL (Kingston Freeport Terminal Limited)
 - Khasm Labs (Formerly 5G Open Innovation Lab)
 - KHNP (Korea Hydro & Nuclear Power)
 - Khomp
 - Kiana Analytics
 - KICOX (Korea Industrial Complex Corporation)
 - Kigen
 - Kindai University
 - Kindroid (Shanghai Jinzhuo Technology)
 - King Chulalongkorn Memorial Hospital
 - King's College London
 - Kirisun Communications
 - Kisan Telecom
 - KIT (Karlsruhe Institute of Technology)
 - KIT (Kumoh National Institute of Technology)
 - KiwiCT (Kiwi Communication Technology)
 - KKU (Khon Kaen University)
 - KLA Laboratories
 - Klas Telecom
 - Klein Electronics
 - Kleos
 - Klimaoprema
 - KMA (Korea Military Academy)
 - KMW
 - Knightscope
 - KNPA (Korean National Police Agency)
 - KOAMTAC
 - Kobe University
 - Koblenz University of Applied Sciences
 - Koch Engineered Solutions
 - Koch Industries
 - Koelnmesse
 - Kolibri Systems
 - Kollmorgen
 - Komatsu
 - KOMIPO (Korea Midland Power)
 - KONE Corporation
 - Konecranes
 - Konica Minolta
 - Koning & Hartman (Axians/VINCI Energies)
 - KONTEL
 - Kontron
 - Kontron Transportation
 - KORAIL (Korea Railroad Corporation)
 - KORE Wireless
 - KOREN (Korea Advanced Research Network)
 - KPCN (Dutch Caribbean Police Force)
 - KPMG
 - KPN
 - KRC Genk
 - KRNA (Korea Rail Network Authority)
 - KRRI (Korea Railroad Research Institute)
 - KRS (Katanning Research Station)
 - KSEC (Kunming Shipbuilding Equipment Corporation)
 - KT Corporation
 - KT SAT
 - KTH Royal Institute of Technology
 - KU (Kasetsart University)
 - KU Leuven
 - Kudelski Group
 - Kudelski Security
 - KUKA
 - Kumagai Gumi
 - Kumu Networks
 - Kuraray
 - KVSC (Kankakee Valley School Corporation)
 - KVVH
 - K-water (Korea Water Resources Corporation)
 - Kwikbit
 - K-Won
 - Kwong Wah Hospital
 - Kyland Technology
 - Kymeta Corporation
 - KymiRing
 - Kyndryl
 - Kyocera Corporation
 - Kyodo Television
 - Kyoto University
 - Kyrio
 - Kyung Hee University
 - Kyushu Electric Power Company
 - Kyushu Institute of Technology
 - Kyushu Sangyo University
 - Kyushu University
 - KZ TECH (KZ Broadband Technologies)
 - L&T (Larsen & Toubro)
 - L&T Heavy Engineering
 - L3Harris Technologies
 - LACROIX Environment
 - LACROIX Group
 - Laird Connectivity
 - Landis+Gyr
 - Landmark Dividend
 - Langkawi Municipal Council
 - Lanner Electronics
 - Lantronix
 - Lanzhou Rail Transit
 - Laois County Council
 - LA-RICS (Los Angeles Regional Interoperable Communications System)
 - Las Vegas Metropolitan Police Department
 - Las Vegas Raiders
 - Lattice Semiconductor
 - Latvian Ministry of Defense
 - Lawrence J. Ellison Institute for Transformative Medicine
 - LCR Embedded Systems
 - LCRA (Lower Colorado River Authority)
 - Leadtek Research
 - Leataata Floyd Elementary School
 - Lebanese Ministry of Interior and Municipalities
 - Lebanon's ISF (Internal Security Forces)
 - LEC
 - Leenos Corporation
 - Leidos
 - Lekha Wireless Solutions
 - Lemko Corporation
 - LENNIIKHIMMASH
 - Lenovo
 - Leonardo
 - Leuven Police
 - Levira
 - Lextrum
 - LF (Linux Foundation)
 - LfULG (Saxony State Office for Environment, Agriculture and Geology)
 - LG Chem
 - LG CNS
 - LG Corporation
 - LG Electronics
 - LG Innotek
 - LG Uplus
 - LGS Innovations
 - LHIND (Lufthansa Industry Solutions)
 - Liaoning Provincial People's Hospital
 - Liberty Global
 - Lierda Science & Technology Group
 - Lifecycle Software
 - Ligado Networks
 - Ligga (Brazil)
 - Lightron
 - Lijiang Police
 - Lime Microsystems
 - Linde Energi
 - Lindsay Broadband
 - Linkem
 - Linksys
 - Linx Technologies
 - Linyi Qiyang International Airport
 - LINZ AG TELEKOM
 - LIONS Technology
 - Liquid Intelligent Technologies
 - LIS (Laboratory of Infocommunication Networks)
 - Lisheng Fujian Communications
 - Lishui Municipal Emergency Management Bureau
 - LITE-ON Technology Corporation
 - LitePoint
 - Little Priest Tribal College
 - LittleBird (LevelUp)
 - LiuGong Machinery
 - Live Nation Entertainment
 - Liverpool 5G
 - LiveU
 - LMCC (Land Mobile Communications Council)
 - LMT (Latvijas Mobilais Telefons)
 - LNER (London North Eastern Railway)
 - LNG Canada
 - LNWH (London North West University Healthcare NHS Trust)
 - Local2U (West Virginia)
 - Lociva
 - Lockheed Martin Corporation
 - Lockheed Martin Space
 - Lodz University of Technology
 - Logan Aluminum
 - Logicalis
 - Logicall
 - LogicTree IT Solutions
 - LOGISTEED
 - LongFi Solutions
 - Longsung Technology
 - Lookout
 - LRM-COM
 - LS ELECTRIC
 - LS Mtron
 - LS telcom
 - LSU Schaberle
 - LTE-X
 - LTTS (L&T Technology Services)
 - Lubeck Port Authority
 - Lucca 5G Testbed
 - Luceor
 - Lufthansa Technik
 - Luka Koper
 - Lulea University of Technology
 - Lumen Technologies
 - Lumentum
 - Lumineye
 - Luna Rossa Prada Pirelli
 - Lundin Mining Corporation
 - LUSD (Lindsay Unified School District)
 - LUT University (Lappeenranta-Lahti University of Technology)
  
 | 
- Luther Burbank School District
 - LuxCarta
 - Luxoft
 - Lyfo
 - Lynchburg City Schools
 - Lynk Global
 - LyondellBasell Industries
 - Lyse
 - M & J Wilkow
 - M.U.S.T. (Macau University of Science and Technology)
 - M/C Partners
 - M1
 - m3connect
 - M4PS (Mobility 4 Public Safety)
 - MAC (Metropolitan Airports Commission)
 - MACA Mining
 - MACC Base (Milford Area Communications Center)
 - MacLean Engineering
 - MACOM
 - Madagascar National Police
 - MadCo 911 (Huntsville-Madison County 9-1-1 System)
 - Madison Festivals
 - Madison International Realty
 - Madrid Metro
 - Maebashi City Fire Department
 - Maehara Elementary School
 - MAFF (Ministry of Agriculture, Forestry and Fisheries, Japan)
 - Magic Software Group
 - Magna Electronics
 - Magna International
 - Magna Steyr
 - Magnaquest Technologies
 - Magyar Telekom
 - Maharaj Nakorn Chiang Mai Hospital
 - Mahidol University
 - Mahindra & Mahindra
 - Maipu Communication Technology
 - Maja Systems
 - Makati City DRRMO (Disaster Risk Reduction & Management Office)
 - Malaga City Council
 - Malaga Local Police
 - Malaga Port Authority
 - Malaga TechPark - PTA (Andalusia Technology Park)
 - Malarenergi
 - Malaysia Airports
 - Mammoth Lakes Fire Protection District
 - Mandarin Oriental Hotel Group
 - MantisNet
 - Manufacturers Alliance
 - MAPA (Ministry of Agriculture, Livestock and Food Supply, Brazil)
 - MarchNet
 - Marfret
 - Marienpark Berlin
 - Markoja
 - Marlink
 - Marquistech
 - Martin UAV
 - Marubeni Corporation
 - Marubeni Network Solutions
 - Marubun Corporation
 - Marvell Technology
 - MASMOVIL
 - MasOrange
 - Masteel Group
 - Mathworks
 - Matrix Electronica
 - MATRIXX Software
 - MatSing
 - Maven Wireless
 - Mavenir
 - Maxar Technologies
 - MaxComm
 - Maxis
 - MaxLinear
 - Mayo Clinic
 - MBIE (Ministry of Business, Innovation and Employment, New Zealand)
 - MBPJ (Petaling Jaya City Council)
 - MC Technologies
 - McAllen ISD (Independent School District)
 - MCAS (Michigan City Area Schools)
 - MCLabs
 - McLaren Applied
 - McMaster University
 - MCMC (Malaysian Communications and Multimedia Commission)
 - MCP (Mission Critical Partners)
 - MCS Benelux
 - MCSD (Murray City School District)
 - MD (MICRODRIVE)
 - Mdex
 - MEASAT Satellite Systems
 - MECSware
 - Media Broadcast
 - Mediane Systeme
 - Mediaset Spain
 - MediaTek
 - Meeami Technologies
 - Meep/Synch (Elbit Systems)
 - MegaChips Corporation
 - MegaFon
 - Megazone Cloud
 - Megh Computing
 - Meglab
 - MeiG Smart Technology
 - Meizu
 - Melia Hotels International
 - Memorial Health System
 - Mentura Group
 - Menzies Mining & Exploration Operations
 - Meo Empresas
 - MER Group
 - Mercedes-Benz Group
 - Merck Group
 - Mesa Public Schools
 - MESS (Turkish Employers' Association of Metal Industries)
 - Messe Berlin
 - Meta
 - Metalloinvest
 - Metanoia Communications
 - Metaswitch Networks
 - Metawave Corporation
 - Metismake
 - Metro Trains Melbourne
 - MetTel
 - Mexican National Guard (Formerly Federal Police)
 - Mexico City Metro
 - MFA (Alliance for Private Networks)
 - MGA Technologies
 - MGM Resorts International
 - MHA (Ministry of Home Affairs, Singapore)
 - MHD (Muhan Digital)
 - MIA (Miami International Airport)
 - Miami-Dade Police Department
 - MIC (Ministry of Internal Affairs and Communications, Japan)
 - MIC Nordic
 - MICAS-RF (MICAS Shenzhen Telecommunication)
 - Michigan National Guard
 - MiCOM Labs
 - Micran
 - Microamp Solutions
 - Microchip Technology
 - Microlab
 - Micron Technology
 - MicroNova
 - MicroSeismic
 - Microsoft Corporation
 - Microwave Networks
 - MiCTA
 - Mid Sweden University
 - Midea Group
 - Miele
 - MIIT (Ministry of Industry and Information Technology, China)
 - MikroTik
 - Mikwave (Guangdong Mikwave Communication Tech)
 - Milesight
 - Milestone Systems
 - Miliwave
 - Mill Creek Residential Trust
 - Miller Electric Company
 - MilWorks Solutions
 - MiMOMax
 - Minas Gerais State Military Police
 - MindMade (WB Group)
 - Mineracao Morro do Ipe
 - MineRP
 - Mines Nancy
 - Minnesota Department of Public Safety
 - MinRes (Mineral Resources)
 - Minsait
 - MIPS
 - MiR (Mobile Industrial Robots)
 - Miracle Mile Shops
 - MIRAIT ONE Corporation
 - Misawa Homes
 - MiTAC Computing Technology Corporation
 - MitraStar Technology
 - MITRE Corporation
 - Mitsubishi Electric Corporation
 - Mitsubishi Estate
 - Mitsubishi HC Capital
 - Mitsubishi Heavy Industries
 - Mitsui & Co.
 - Mitsui Fudosan
 - Mitsui Resources
 - MIXI
 - MKI (Mitsui Knowledge Industry)
 - ml&s
 - MLB (Major League Baseball)
 - MLGW (Memphis Light, Gas and Water)
 - MLIT (Ministry of Land, Infrastructure, Transport and Tourism, Japan)
 - MLT (Maskin & Laserteknik)
 - MMG
 - MMK (Magnitogorsk Iron & Steel Works)
 - MMU (Multimedia University)
 - MND (Ministry of National Defense, South Korea)
 - MOBI (Mobi Antenna Technologies)
 - Mobil Group (Russia)
 - Mobilaris
 - Mobile Inform Group
 - Mobile Mark
 - Mobile Tornado
 - Mobile Viewpoint
 - MobileComm Professionals (UST)
 - MobileDemand
 - MobileIron
 - MobileTek (Shanghai Mobiletek Communication)
 - Mobileum
 - Mobilicom
 - Mobilitie
 - Mobilus Labs
 - Mobily (Etihad Etisalat)
 - MOBiSENSE
 - Mobiveil
 - MOD (Ministry of Defence, United Kingdom)
 - Modular Mining Systems
 - Moerdijk Port Authority
 - MOF (Ministry of Oceans and Fisheries, South Korea)
 - MOIS (Ministry of the Interior and Safety, South Korea)
 - Molex
 - Mondelez International
 - Monmouth County Sheriff's Office
 - Monogoto
 - Monstra
 - Moray Offshore Renewable Power
 - Mori Building Company
 - Morningcore Technology
 - Morningstar Corporation
 - Morris School District
 - Mortenson
 - Moscow City Police
 - Moscow Metro
 - Moseley Associates
 - MosoLabs
 - Motive Infrastructure Solutions
 - Motive Power Marine
 - MotorLand Aragon
 - Motorola Mobility
 - Motorola Solutions
 - Mott MacDonald
 - Mountain View Whisman School District
 - Movandi
 - Movistar Chile
 - Moxa
 - MP Antenna
 - MPA (Maritime and Port Authority of Singapore)
 - MPF (Mauritius Police Force)
 - MPS (Ministry of Public Security, China)
 - MRC (Mobile Radio Center)
 - MRK Media
 - MRS Logistica
 - MRT Technology (Suzhou)
 - MSB (Civil Contingencies Agency, Sweden)
 - MSB (M S Benbow & Associates)
 - MSIT (Ministry of Science and ICT, South Korea)
 - MSSA (Mobile Satellite Services Association)
 - MST Global (Mine Site Technologies)
 - MT (Marine Technologies)
 - MTA (Metropolitan Transportation Authority, New York)
 - MTC (Manufacturing Technology Centre, United Kingdom)
 - MTI (Microelectronics Technology Inc.)
 - MTI Wireless Edge
 - MTN Group
 - MTR (Mass Transit Railway)
 - MTS (Mobile TeleSystems)
 - MTU Aero Engines
 - MUGLER
 - MultiTech (Multi-Tech Systems)
 - Munich Airport
 - Municipal Council of Cascais
 - MuralNet
 - Murata Manufacturing
 - Mushroom Networks
 - Musterion Advisors
 - Mutualink
 - MVI Group
 - MVM Group
 - MW (Matrix Wave)
 - MxD (Manufacturing x Digital)
 - MYCOM OSI
 - Mynaric
 - MYT Electronics
 - N.A.T.
 - Nabiq
 - Nable Communications
 - Nacka Energi
 - Nacogdoches ISD (Independent School District)
 - Nagasaki University Hospital
 - Nagoya Grampus
 - NAIST (Nara Institute of Science and Technology)
 - Nanjing Lukou International Airport
 - Nanjing Metro
 - Nanjing Municipal Government
 - Nanning Public Security Bureau
 - Nanning Wuxu International Airport
 - NanoSemi
 - Napatech
 - Naragakuen University
 - Narita International Airport
 - NASCAR (National Association for Stock Car Auto Racing)
 - Nash Technologies
 - National and Kapodistrian University of Athens
 - National Defense Medical College (Japan)
 - National Grid Group
 - National Police of Colombia
 - National Police of the Netherlands
 - NATO (North Atlantic Treaty Organization)
 - Naval Group
 - Navantia
 - NAVER Cloud
 - NAVER Corporation
 - Navya
 - NBA (National Basketball Association)
 - NBN Co
 - NBTC (National Broadcasting and Telecommunications Commission, Thailand)
 - NC State (North Carolina State University)
 - NCC (National Communications Commission, Taiwan)
 - NCC (National Composites Centre, United Kingdom)
 - NCRTC (National Capital Regional Transport Corporation)
 - NCSR (National Center for Scientific Research) Demokritos
 - NDHU (National Dong Hwa University)
 - NEA (National Environment Agency, Singapore)
 - Nearby Computing
 - NEC Corporation
 - Nedaa
 - NEDO (New Energy and Industrial Technology Development Organization, Japan)
 - Nemergent Solutions
 - Nemko
 - Neoenergia
 - Neolink Communications Technology
 - NEOM
 - NeoPlane
 - Neoway Technology
 - Neptune Communications
 - Neragon Networks
 - Neste
 - Nesten
 - Nestle
 - Net AI
 - Net One Partners
 - Net1 PH (Broadband Everywhere Corporation)
 - Netas
 - NETBEE (NET-Automation)
 - NetCity (GEOS Telecom/GEOS Holding)
 - Netcracker Technology
 - NetFoundry
 - Netgear
 - NetGenuity
 - Netivei Israel (National Transport Infrastructure Company)
 - NetModule
 - Netmore Group
 - NetNordic Group
 - NETSCOUT Systems
 - Netsia
 - Netsync Network Solutions
 - Netvision Telecom
 - Network Rail
 - Netz Leipzig
 - Neutral Wireless
 - Neutroon Technologies
 - Nevada Department of Transportation
 - New H3C Technologies
 - New Hampshire Department of Safety
 - New J
 - New Postcom Equipment
 - New Trend International Logis-Tech
 - New Zealand Police
 - NewCore Wireless
 - Newcrest Mining
 - NewEdge Signal Solutions
 - NewGens (South Korea)
 - Newmont Corporation
 - Newport Utilities
 - NEXCOM International
 - Nexedi
 - Nexign
 - Nexpring
 - Next.e.GO Mobile
 - NextEPC Korea (COONTEC)
 - NextGen (Japan)
 - NextGen (Kelly Telecom)
 - Nextivity
 - NextLight
 - Nextlink Internet
 - NextNav
 - NextWave
 - Nextworks
 - NFL (National Football League)
 - NG Bailey
 - ng4T
 - NGA (Next G Alliance)
 - NGCC (Next-Generation Critical Communications, New Zealand)
 - NGIC (Next Gen Infraco)
 - NGK Group (NGK Insulators)
 - NGMN (Next-Generation Mobile Networks) Alliance
 - NGNAPPS (Next Generation Applications)
 - ng-voice
 - NHL (National Hockey League)
 - NHS (National Health Service, United Kingdom)
 - NI (National Instruments)
 - NIA (National Information Society Agency, South Korea)
 - Niam
 - NICC (Nebraska Indian Community College)
 - NICE
 - NICE TV (Niikawa Information Center)
 - Nigeria Police Force
 - NIIR (Radio Research and Development Institute, Russia)
 - NimbeLink
 - NineTwelve
 - Ningbo Rail Transit
 - Ningbo-Zhoushan Port
 - Ningxia Baofeng Energy Group
 - Nippon Airport Radio Services
 - Nippon Dentsu
 - Nippon Express
 - Nippon Koei
 - Nippon Steel Corporation
 - Niral Networks
 - Nissan Motor Company
 - Nitto Denko Corporation
 - NKG (New Kinpo Group)
 - Nkom (Norwegian Communications Authority)
 - NLMK Group
 - NLT Telecom
 - NMIS (National Manufacturing Institute Scotland)
 - NMU (Northern Michigan University)
 - NNS (Newport News Shipbuilding)
 - Nobu Hospitality
 - Node-H
 - Noetsu Cablenet
 - Nokia
 - Nomad Digital
 - Nopparat Rajathanee Hospital
 - NORCAT
 - Nordic Semiconductor
 - Nordic Telecom
 - Norfolk Southern Corporation
 - Nornickel (Norilsk Nickel)
 - Norsat International
 - Norske tog
 - North Lanarkshire Council
 - North Weijiamao Coal Power
 - Northcom Solutions
 - Northeastern University
 - Norther (Belgium)
 - Northern Powergrid
 - Northern Star Resources
 - Northland Power
 - Northrop Grumman Corporation
 - Northumbrian Water
 - Northwest Seaport Alliance
 - NorthWestern Energy
 - Norwegian Air Ambulance
 - Norwegian Armed Forces
 - Norwegian Polar Institute
 - Norwegian Police Service
 - NOS (Portugal)
 - NOTION Information Technology
 - Nottinghamshire County Council
 - Nova Labs (Helium)
 - NOVA Spektrum
 - Novadelta Cafes (Nabeiro Group)
 - NovaWind
 - Novaya Gornaya (New Mining Management Company)
 - NOVEC
 - NOVELSAT
 - Novo Resources
 - NOW Corporation
 - NPF (National Police Federation)
 - NPL (National Physical Laboratory, United Kingdom)
 - NPS (Naval Postgraduate School)
 - NRB (Network Research Belgium)
 - NRECA (National Rural Electric Cooperative Association)
 - NRK (Norwegian Broadcasting Corporation)
 - NRTC (National Rural Telecommunications Cooperative)
 - NS (Nederlandse Spoorwegen)
 - NS Solutions Corporation
 - NSC (National Spectrum Consortium)
 - Nsight
 - NSU (Nova Southeastern University)
 - NSW (New South Wales) Telco Authority
 - NSW (Nivelsteiner Sandwerke and Sandsteinbruche)
 - NT (National Telecom)
 - NTC Corporation
 - NTC Corporation (Japan)
 - NTMA (National Treasury Management Agency, Ireland)
 - NTMore (Network Technology More)
 - NTNU (Norwegian University of Science and Technology)
 - NTT AgriTechnology
 - NTT Business Solutions
 - NTT Com (NTT Communications)
 - NTT Com Asia (Hong Kong)
 - NTT DATA
 - NTT DoCoMo
 - NTT East
 - NTT Group
 - NTT West
 - NTTe-Sports
 - NTU (Nanyang Technological University)
 - NTU (Navajo Technical University)
 - NTU (Nottingham Trent University)
 - Nubia Technology
 - Nuestra Senora del Prado General Hospital
 - NUH (National University Hospital)
 - NuLink (Switzerland)
 - NuRAN Wireless
 - Nurburgring Motorsports Complex
 - Nurlink Technology
 - NurnbergMesse
 - NUS (National University of Singapore)
 - Nutaq Innovation
 - Nutrien
 - NVIDIA Corporation
 - NVision Group
 - NVL (Naval Vessels Lurssen) Group
 - NWS (Network Wireless Solutions)
 - NXP Semiconductors
 - NYBSYS
 - NYCU (National Yang Ming Chiao Tung University)
 - NYP (Nanyang Polytechnic)
 - NYPA (New York Power Authority)
 - NYPL (New York Public Library)
 - O2 Czech Republic
 - Oakland Fire Department
 - Oasis Smart SIM
 - Obayashi Corporation
 - OBB (Austrian Federal Railways)
 - Obihiro University of Agriculture and Veterinary Medicine
 - Obvios
 - OC Transpo
 - Ocado
 - Ocado Technology
 - Oceaneering International
 - Oceus Networks
 - OCI Global
 - OCP (Open Compute Project) Foundation
 - Octasic
 - O-Cubes
 - Odido (Formerly T-Mobile Netherlands)
 - ODN (Orbital Data Network)
 - OE Solutions
 - OFCA (Office of the Communications Authority, Hong Kong)
 - Ofcom (Office of Communications, United Kingdom)
 - OFS Fitel
 - Ohio State University
 - Ohmio
 - Ohmori Chrome
 - Oi
 - OIV Digital Signals and Networks
 - Okaya Steel
 - OKI Electric Industry
 - OMA SpecWorks (Open Mobile Alliance)
 - Omantel
 - Omega Wireless
 - Omnispace
 - Omnitele
 - Omnitron Systems
 - Omnitronics
 - OMRON Corporation
 - OMSS (Oakland Maritime Support Services)
 - ONCF (Moroccan National Railways Office)
 - Oncor Electric Delivery Company
 - Ondas Networks
 - One New Zealand (Vodafone New Zealand)
 - One2many
 - one6G Association
 - OneLayer
 - OnePlus
 - OneScreen
 - OneSimCard
 - OneWeb
 - ONEX Technology Systems & Business Solutions
 - ONF (Open Networking Foundation)
 - OnGo Alliance
 - Onomondo
 - Ontix
 - Onwave
 - Ooredoo
 - Opanga Networks
 - OPC Foundation
 - Open Edge Computing Initiative
 - Open RAN Policy Coalition
 - Open Valley
 - Opencode Systems
 - Openet
 - OpenInfra (Open Infrastructure) Foundation
 - OpenSky (Nigeria)
 - Openvia Mobility
 - OPPO
 - O'Prueba Technology
 - OPTAC-X
 - OPTAGE
 - OptConnect
 - Optical Zonu Corporation
 - Opticoms
 - Optimum Mobile (Altice USA)
 - Option
 - OptiTel Australia
 - Optiva
 - OPT-NC (OPT New Caledonia)
 - Optus (Singtel)
 - OQ Technology
 - Oracle Communications
 - Oracle Corporation
 - O-RAN Alliance
 - Orange
 - Orange Belgium
 - Orange Business Services
 - Orange Jordan
 - Orange Poland
 - Orange Romania
 - Orange Spain
 - ORBCOMM
 - ORE (Offshore Renewable Energy) Catapult
 - Ori Industries
 - Oriental Cable Network
 - Origin Energy
 - Orion Labs
 - ORLEN
 - ORS Group (Austrian Broadcasting Services)
 - orsted
 - OSA (OpenAirInterface Software Alliance)
 - Osaka Gas
 - Osaka Metro
 - Osaka University
 - Oscilloquartz
 - OSE (Hellenic Railways Organization)
 - OSIsoft
 - Oslo University Hospital
 - OsloMet (Oslo Metropolitan University)
 - Osnabruck University of Applied Sciences
 - OSRAM
 - Ostfalia University of Applied Sciences
 - Otary
 - OTE Group
 - OTEKO Group
 - OTH Amberg-Weiden (East Bavarian Technical University of Applied Sciences)
 - OTH Regensburg (Regensburg University of Applied Sciences)
 - Ottawa Fire Services
 - Ottawa Paramedic Service
 - Ottawa Police Service
 - Outokumpu
 - OV (Manx Telecom)
 - OVGU (Otto-von-Guericke University Magdeburg)
 - OVHcloud
 - Oxy (Occidental Petroleum Corporation)
 - OYS (Oulu University Hospital)
 - OZ Minerals
 - P&G (Procter & Gamble)
 - P.I. Works
 - PACCAR
 - PacStar (Pacific Star Communications)
 - Padtec
 - Pakistan Air Force
 - Pakistan Army
 - Pakistan Ministry of Interior
 - Pakistan Navy
 - Palo Alto Networks
 - PAMA (PT Pamapersada Nusantara)
 - Panasonic Avionics Corporation
 - Panasonic Connect
 - Panasonic Holdings Corporation
 - Panda Electronics
 - Pangang Group
 - PanOptis
 - Panorama Antennas
 - Panoramic Resources
 - Paradise Mobile
 - Parallel Wireless
 - Paramount Global
 - Parana State Secretariat of Public Security
 - Parks Canada
 - Parkwind
 - Parkwon
 - Parlier Unified School District
 - Parsec Technologies
 - Particle
 - Partner Communications
 - PAStech
 - Pato Branco City Council
 - Patrocinium Systems
 - Patterson Unified School District
 - Patton
 - Pavlov Media
 - Pays de la Loire Chamber of Agriculture
 - PBA (Philippine Basketball Association)
 - PBE Axell (Formerly Axell Wireless)
 - PBR (Professional Bull Riders)
 - PCCW
 - PCK Raffinerie
 - PCs for People
 - PCS Technologies
 - PCT (Piraeus Container Terminal)
 - PCT Cartuja (Cartuja Science and Technology Park)
 - PCTEL
 - PCTEST Lab (PCTEST Engineering Laboratory)
 - PD Ports
 - PDRM (Royal Malaysia Police)
 - PDVSA (Petroleos de Venezuela)
 - PEA (Provincial Electricity Authority, Thailand)
 - Peabody Energy
 - Peatalk Corporation
 - Peel Regional Police
 - Pegatron Corporation
 - Pei Tel Communications
 - Pektron
 - Pelindo (PT Pelabuhan Indonesia)
 - Pelion
 - Pembroke Resources
 - Pemex (Petroleos Mexicanos)
 - Penguin Solutions
 - Pentanet
 - Pente Networks
 - Pentonet
 - People's Hospital of Xinchang County
 - Peplink (Plover Bay Technologies)
 - Pepperl+Fuchs
 - Pepro
 - Peraso
 - Peraton Labs
 - Percepto
 - Perle Systems
 - Petrobras (Petroleo Brasileiro)
 - PetroChina/CNPC (China National Petroleum Corporation)
 - PETRONAS (Petroliam Nasional)
 - PGA of America
 - PGA Tour
 - PGE (Polish Energy Group)
 - PGE (Portland General Electric)
 - PGE Dystrybucja
 - PGE Systemy
 - Pharrowtech
 - Philip Morris International
 - Philippine Air Force
 - Philippine Army
 - Philippine Red Cross
 - Philips
 - Phillips 66
 - Phirst Technologies
 - Phluido
 - Phoenix Contact
 - Phoenix Primary School (Liverpool)
 - Phytium Technology (Tianjin Phytium Information Technology)
 - PHYTunes
 - PIA (PSBN Innovation Alliance)
 - Picocom
 - Pierson Wireless
 - PIK PBA (Russia)
 - Pioneer Natural Resources
 - Pitkin County Telecommunications
 - Pivot Technology Services
 - Pivotal Commware
 - Pivotel Group
 - Pivotone
 - Pixavi
 - Pixel Health
 - PK Solutions
 - PKP (Polish State Railways)
 - PLA (People's Liberation Army)
 - PLA Navy (People's Liberation Army Navy)
 - Plainview ISD (Independent School District)
 - Platform9
 - PLDT
 - Pletronics
 - Plextek
 - Plintron
 - PLINX (Wearable Link)
 - Plus (Polkomtel)
 - PMeV (German Professional Mobile Radio Association)
 - PML (Plymouth Marine Laboratory)
 - PMRDA (Pune Metro Region Development Authority)
 - PMY Group
 - PNNL (Pacific Northwest National Laboratory)
 - PNP (Philippine National Police)
 - POCSTARS
 - Pod Group
 - Polaris Networks
 - Polaris Wireless
 - Polish National Police
 - Politecnico di Torino
 - Pollen Mobile
 - Polska Spolka Gazownictwa
 - Polymetal International
 - Polyus
 - POM West-Vlaanderen (Provincial Development Agency of West Flanders)
 - Porsche
 - Porsche Engineering
 - Port Authority of Douala
 - Port Authority of New York and New Jersey
 - Port of Aveiro
 - Port of Blyth
 - Port of Kokkola
 - Port of Long Beach
 - Port of Los Angeles (Los Angeles Harbor Department)
 - Port of Lulea
 - Port of Oakland
 - Port of Oulu
 - Port of Ploce Authority
 - Port of Pori
 - Port of Tokyo
 - Port of Turku
 - Port of Tyne
 - Port Oostende
 - Port System Authority of the Northern Tyrrhenian Sea
 - Portuguese Navy
 - Portuguese Red Cross
 - POSCO
 - POSCO Australia
 - Positron Access Solutions
 - Posiva
 - POST Luxembourg
 - Posten (Norwegian Postal Service)
 - PoteNit
 - Potevio
 - Poutanet
 - Powertech Labs
 - PowerTrunk
 - PPA (Pilbara Ports Authority)
 - PPC (Power Plus Communications)
 - PPC (Public Power Corporation)
 - PPC Broadband
 - Prague Metro
 - PRASA (Passenger Railway Agency of South Africa)
 - Precision OT (Optical Transceivers)
 - PRESCOM
 - PRF (Purdue Research Foundation)
 - PrimeTel
 - Prinzhorn Group
 - PrioCom
 - Proef
 - Pro-M (Hungary)
 - Pronto
 - Proptivity
 - Proscend Communications
 - PROSE Technologies
 - Prospecta Utilities
 - Protection Civile des Vosges
 - PROTEI
 - Protezione Civile (Department of Civil Protection, Italy)
 - Proxim Wireless Corporation
 - Proximie
 - Proximus
 - Proximus NXT
 - Pryme Radio Products
 - Pryor Creek Music Festivals
 - PSA International
 - PSA Italy
 - PSBTA (Public Safety Broadband Technology Association)
 - PSCA (Punjab Safe Cities Authority)
 - PSCE (Public Safety Communication Europe)
 - PSE (Polish Power Grid Company)
 - pSemi Corporation
 - PSNI (Police Service of Northern Ireland)
 - PSU (Prince of Songkla University)
 - PT Freeport Indonesia
 - PT INTI (PT Industri Telekomunikasi Indonesia)
 - PT LEN Industri
 - PT Net Satu Indonesia (Net1 International)
 - PTA (Pakistan Telecommunication Authority)
 - PTA (Public Transport Authority of Western Australia)
 - PTC
 - PTD (Posts and Telecommunications Department, Myanmar)
 - PTI (Itaipu Technological Park)
 - PTI (Persistent Telecom Inc.)
 - PTS (Planetary Transportation Systems)
 - PTS (Post and Telecom Authority, Sweden)
 - PTT Group
 - PTV (Public Transport Victoria)
 - Public Safety Canada
 - Publicis Sapient
 - PUC-Rio (Pontifical Catholic University of Rio de Janeiro)
 - PUCV (Pontifical Catholic University of Valparaiso)
 - Puerto Rico Police Department
 - Puloli
 - Pulsara
 - Pulse Electronics
 - Purdue University
 - PureSoftware
 - Pycom
 - Pyramid Network Services
 - PySENSE
 - Qatar Armed Forces
 - Qatar MoD (Ministry of Defense)
 - Qatar MOI (Ministry of Interior)
 - Qatar Police
 - QCoal Group
 - QCT (Quanta Cloud Technology)
 - QGC (Shell)
 - Qhotels
 - QinetiQ
 - Qingdao Police
 - Qingdao Saline-Alkali Tolerant Rice Research & Development Center
 - Qinhuangdao Public Security Bureau
 - Qiqihar Municipal Public Security Bureau
 - Qiqihar Police
 - QMetco
 - QNAP Systems
 - Qorvo
 - QTnet
 - QTV (Quipu TV Limited)
 - QuadGen Wireless Solutions
 - Qualcomm
 - Quanta Computer
 - Quantum Wireless
 - QuayChain
 - Qube Holdings
 - Qubicom
 - Qucell Networks
 - Quebecor
 - Quectel Wireless Solutions
 - Queensland Police Service
 - Queensland Rail
 - Quintel
 - Qulsar
 - Quortus
 - Qwake Technologies
 - Qwilt
 - R Systems (Computaris International)
 - R3 Solutions
 - RAC (Railway Association of Canada)
 - RACOM (Czech Republic)
 - RACOM Corporation
 - RACSA (Radiografica Costarricense)
 - RAD
 - RADCOM
 - Radiall
 - Radio Gigabit
 - Radio IP Software
 - RadioMobile
 - Radisys
 - RADTONICS
 - Radware
 - RADWIN
 - RAF (Royal Air Force)
 - Rafael Advanced Defense Systems
 - Rai (Radiotelevisione Italiana)
 - RAI Amsterdam
 - Rai Way
 - RAICO (Chile)
 - Raisecom
 - Raizen
 - Rajant Corporation
 - Rajavithi Hospital
 - Rakon
 - Rakuten Mobile
 - Rakuten Symphony
 - RAKwireless
 - Ramathibodi Hospital
 - Rambam Health Care Campus
 - Ramen Networks
 - Range Networks
 - Ranger Systems
 - Ranplan Wireless
 - Rapid.Space
 - RapidDeploy
 - RapidSOS
 - Rapidtek Technologies
 - RATP Group
 - Rave Mobile Safety
 - Raycap
 - Raycom Ventures
 - RCMP (Royal Canadian Mounted Police)
 - RCN (Reinan Cable Network)
 - RCS Telecommunications
 - RCT (Remote Control Technologies)
 - Ready Wireless
 - REALLY Communications
 - Realme
 - RealWear
 - Red 5
 - Red Bull Stadion Munchen
 - Red Electrica
 - Red Hat
 - Red Lion Controls
 - RED Technologies
 - REDCOM Laboratories
 - Redevi
 - RedZinc
 - Redzone Wireless
 - Regis Resources
 - Reliance Industries
 - Reliance Jio Infocomm
 - REMEC Broadband Wireless Networks (Bridgewave Communications/SAGE SatCom)
 - Renault Group
 - Renesas Electronics Corporation
 - REPLY
 - Repsol
 - RESCAN (Canary Islands Network for Emergency and Security)
 - Rescue 101 SAR (Search and Rescue)
 - Rescue 42
 - Resolute Forest Products
 - Responder Corp
 - Reutlingen University
 - RF Connect
 - RF DSP
 - RF Industries
 - RF MORECOM
 - RF Window
 - RF-Comm
 - RFHIC Corporation
 - RFI Technology Solutions
 - RFS (Radio Frequency Systems)
 - RFTech
 - RFWEL Engineering
 - RGE (Rio Grande Energia)
 - Rheinmetall
 - Rhode Island Emergency Management Agency
 - Rhodos Consulting Group
 - Ribbon Communications
 - Ricoh
 - Ricon Mobile
 - Riedel Communications
 - Riga City Council
 - Riga Technical University
 - RigNet (Viasat Energy Services)
 - Rigstar Industrial Telecom
 - Rijkswaterstaat (Dutch Ministry of Infrastructure and Water Management)
 - RIKS (State Infocommunication Foundation, Estonia)
 - Riman Korea
 - RIMEDO Labs
 - Rincon de la Victoria Local Police
 - Ringer Mobile (Teliax)
 - Rio de Janeiro Fire Department
 - Rio Grande do Sul State Secretariat of Public Security
 - Rio Tinto
 - RiPSIM Technologies
 - RISE (Research Institutes of Sweden)
 - RIVA Networks
 - Rivada Networks
 - Rivada Space Networks
 - Rivas Vaciamadrid City Council
 - RKTPL (RK Telesystem Private Limited)
 - Roaring Fork School District
 - Robert Bosch
 - Robertsfors Municipality
 - Robin.io
 - ROBOPAC
 - RoboTechnik
 - ROBUR Industry Service Group
 - Robustel
 - Rockwell Automation
 - Rogers Business
 - Rogers Communications
 - Rogers Corporation
 - Rohde & Schwarz
 - Rohill
 - ROK (Republic of Korea) Army
 - ROKAF (Republic of Korea Air Force)
 - ROKN (Republic of Korea Navy)
 - Rolling Wireless
 - Rolloos
 - Rolloos (FMJ Group)
 - Roma Capitale
 - ROP (Royal Oman Police)
 - Rosatom
 - Rosenberger
 - Rostec
 - Rostelecom
 - Round Oak Minerals
 - Roundrock Technology
 - Roy Hill Holdings
 - Royal Australian Navy
 - Royal Bahamas Police Force
 - Royal Decree for Public Safety Broadband
 - Royal Flying Doctor Service (Australia)
 - Royal Marines
 - Royal Navy
 - Royal Netherlands Military Police
 - Royal New Zealand Air Force
 - Royal Norwegian Navy
 - Royal Schiphol Group
 - Royal Thai Navy
 - Royal Thai Police
 - Royal Wagenborg
 - Royal Welsh Agricultural Society
 - Royole Corporation
 - RSCC (Russian Satellite Communications Company)
 - RSConnect
 - RTBF (Belgian Radio-Television of the French Community)
 - RTE (Raidio Teilifis Eireann)
 - RTL Deutschland
 - RTO Wireless
 - RTP (Radio e Televisao de Portugal)
 - RTRI (Railway Technical Research Institute, Japan)
 - RTVE (Radiotelevision Espanola)
 - RTX A/S
 - RTX Corporation (Formerly Raytheon Technologies)
 - RTx Technology
 - RUB (Ruhr University Bochum)
 - Rudin Management Company
 - RugGear
 - RuggON Corporation
 - Ruijie Networks
 - Rumo
 - RunEL
 - Ruralink Broadband
 - Rush University System for Health
 - Rushmere Technology
 - Rutronik
 - RWG (Rotterdam World Gateway)
 - RWTH Aachen University
 - Ryoden Corporation
 - RZD (Russian Railways)
 - S&T Iskratel
 - SA Power Networks
 - Saab
 - Saankhya Labs
 - Saarland University
 - SABIC
 - SAC iWATA (Smart Agriculture IWATA)
 - SAC Wireless
 - Sacramento City Council
 - Sacred Wind Communications
 - SAE IT-Systems
 - SAF (Singapore Armed Forces)
 - SAF Tehnika
 - Safari Solutions
 - SAFE Boats International
 - Safe-Com Wireless
 - SafeMobile
 - Safe-Net Forum
 - Safer Buildings Coalition
 - Safran
 - Saga TV
 - Sagan Tosu (Sagan Dreams)
 - Sagemcom
 - SageRAN (Guangzhou SageRAN Technology)
 - Saguna Networks
 - SAI Technology
 - SAIC (Science Applications International Corporation)
 - SailGP
 - Saint Paul's Hospital (Taiwan)
 - Saitama Medical University
 - Sakhalin Energy
 - SalMar
 - Salzburg AG
 - Salzburgring
 - Salzgitter
 - SAM (Sul Americana de Metais)
 - Samji Electronics
 - Samsung
 - SAMWON FA
 - Samyoung Celetra
 - San Diego Fire-Rescue Department
 - San Diego Padres
 - San Diego Police Department
 - SANDF (South African National Defense Force)
 - Sandvik
 - Sandvine
 - Sanechips Technology
 - SANG (Saudi Arabian National Guard)
 - Sanjole
 - Santa Ana Unified School District
 - Santa Maria-Bonita School District
 - Santee Sioux Nation
 - Santos
 - San-tron
 - Sanxing (Ningbo Sanxing Smart Electric)
 - SANY Heavy Equipment
 - SANY Heavy Industry
 - Sanya Phoenix International Airport
 - Sao Martinho
 - Sao Paulo State Military Police
 - SAP
 - SAPS (South African Police Service)
 - Sapura Energy (Sapura Group)
 - Sapura Secured Technologies (Sapura Group)
 - Saracen Mineral Holdings
 - Sarcos Robotics
 - Sartorius
 - Sasken Technologies
 - SaskTel
 - Sateliot
 - Satellite Applications Catapult
 - SatixFy
 - Saudi MOI (Ministry of Interior)
 - Saviah Technologies
 - Savonia University of Applied Sciences
 - Savox Communications
 - Sayona Mining
 - SBA Communications
 - SBB (Swiss Federal Railways)
 - SBCSC (South Bend Community School Corporation)
 - Sberbank
 - SCA (Svenska Cellulosa Aktiebolaget)
 - Scania
 - SCE (Southern California Edison)
 - Sceye
 - SCF (Small Cell Forum)
 - SCG (Siam Cement Group)
 - Schaeffler Group
 - Schlumberger
 - Schneider Electric
 - Schonhagen Airport
 - Schoten Police
 - Scotland 5G Center
 - SCRF (State Commission for Radio Frequencies, Russia)
 - SDG&E (San Diego Gas & Electric)
 - SDIS 59 (Nord Departmental Fire & Rescue Service)
 - SDLG (Shandong Lingong Construction Machinery)
 - SDS-Ugol
 - SEA (Systems Engineering & Assessment)
 - Seaboard Marine
 - Seafar
 - Seamless Air Alliance
 - Seamless Waves
 - SEAT
 - Seatrium (Formerly Keppel Offshore & Marine)
 - Sectra Communications
 - Secure Chorus
 - Secured Communications
 - SecureG
 - SecurifAI
 - Securitas
 - SecurityGen
 - Securus Technologies
 - Sedna Industrial IT Solutions
 - SEE Telecom
 - SEEHAFEN KIEL
 - Seehafen Stralsund
 - Seehafen Wismar
 - Segezha Group
 - SEGULA Technologies
 - SEJONG Telecom
 - SEL (Schweitzer Engineering Laboratories)
 - Selcom (Netherlands)
 - Select Spectrum
 - SELECTRIC Nachrichten-Systeme
 - Seligdar
 - Sempra
 - SEMPRE (Secure EMP-Resilient Edge)
 - Semtech Corporation
 - SENAI (National Service for Industrial Training, Brazil)
 - Senko Advanced Components
 - Sennheiser
 - Sensorview
 - Senstar Corporation
 - Sensus
 - Sentient Energy
 - Sentinel Camera Systems
 - Seong Ji Industrial
 - SEONTECH
 - Seoul Incheon International Airport
 - Seoul Metropolitan Subway
 - Seowon Intech
 - Sepura
 - SEPWA (South East Premium Wheat Growers Association)
 - Sequans Communications
 - Serbian Ministry of Interior
 - Sercomm Corporation
 - SERGAS (Galician Health Service)
 - ServiceNow
 - SES
 - SETAR (Aruba)
 - SETUP Protokolltester
 - Severstal
 - SEW-EURODRIVE
 - SFR (Altice France)
 - SFU (Simon Fraser University)
 - SGCC (State Grid Corporation of China)
 - SGH (SMART Global Holdings)
 - SGP (Societe du Grand Paris)
 - SGS
 - Shaanxi Coal and Chemical Industry Group
 - Shaanxi Shengwei Building Materials Group
 - Shaanxi Shenyan Coal
 - Shaanxi Tenghui Mining
 - Shaanxi Yanchang Petroleum Group
 - Shabodi
 - Shandong Energy Group
 - Shandong Gold Mining
 - Shandong HSBC Petrochemical Group
 - Shandong Port Group
 - Shanghai Airport Authority
 - Shanghai Municipal People's Government
 - Shanghai Pearl Oriental Group
 - Shanghai Police Department
 - Shanghai Shentong Metro Group
 - Shanghai University Of Engineering Science
 - Shannon Wireless (Zhejiang Shannon Communication Technology)
 - Shantui Construction Machinery
 - Shanxi Coking Coal Group
 - Shanxi Huayang Group
 - Shaoguan Iron & Steel Group
 - Shared Access
 - Sharp Corporation
 - ShawnTech Communications
 - SHC (Stanford Health Care)
 - Shell
 - Shenbao Energy
 - Shendong Coal
 - Shenglu (Guangdong Shenglu Telecommunication)
 - Shenyang Metro
 - Shenzhen Airport Company
 - Shenzhen CXD Science & Technology
 - Shenzhen Futian Medical Consortium
 - Shenzhen Metro
 - Shenzhen Public Security Bureau
 - Shenzhen Recoda Technologies
 - Shenzhen Third People's Hospital
 - Shenzhen University General Hospital
 - Shenzhen Water Group
 - Sherpa 6
 - SHI (Samsung Heavy Industries)
 - Shijiazhuang Metro
 - Shimizu Corporation
 - Shinshiro Municipal Hospital
 - Shinwa Co. (Japan)
 - SHR (Shuohuang Railway)
 - Shyam Group
 - SIAE Microelettronica
 - SIBUR
 - SICK
 - Siemens
 - Siemens Energy
 - Siemens Mobility
 - Sierra Wireless
 - Sigma Connectivity
 - Sigma Wireless
 - Signal Information & Communication Corporation
 - Signal Partners (Finland)
 - Signalchip
 - Signalwing
 - Signify
 - Siklu
 - Silesian University of Technology
 - Silicom Connectivity Solutions
 - Silicom SAS (France)
 - Silver Lake Resources
 - Silverback Marine
 - Silversea Cruises
 - SIM Conecta
 - SIMBA Telecom
 - SIMCom Wireless Solutions
 - Simnovus
 - Simoco Wireless Solutions
 - Simon Mokster Shipping
 - Sinclair Technologies
 - Singapore Polytechnic
 - Singtel
 - SinkabergHansen
 - Sinnwell
 - Sinopec (China Petroleum & Chemical Corporation)
 - Sinotrans
 - SIP (Sidewalk Infrastructure Partners)
 - SIPG (Shanghai International Port Group)
 - SIRADEL
 - Siriraj Hospital
 - SiRRAN Communications
 - Sistema
 - SITA
 - Sitarail (Bollore Group)
 - siticom
 - SiTime Corporation
 - SITRONICS
 - Sivers Semiconductors
 - Siyata Mobile
 - SJSU (San Jose State University)
 - SK Hynix
 - SK Networks Service
 - SK Telecom
 - SK Telesys
 - SKF
 - Skironis Aquaculture
 - Skoda Auto
 - Skogforsk (Forestry Research Institute of Sweden)
 - Skoltech (Skolkovo Institute of Science and Technology)
 - Sky Packets
 - SKY Perfect JSAT
 - SkyFive
 - Skylark Wireless
 - SkyLink (Tele2 Russia)
 - Skylo Technologies
 - SkyMax Network
 - Skytic Telecom
 - SKYTRAC Systems
 - Skyvera (TelcoDR)
 - Skyworks Solutions
 - Skyworth
 - SLA Corporation
 - SLC (Secure Land Communications)
 - SLC Agricola
 - Slovak Telekom
 - Slovenian Ministry of Interior
 - Slovenian Ministry of Public Administration
 - SM Optics
 - Smart Communications
 - Smart DCC (Capita)
 - Smart Mobile Labs
 - Smart Nano NI
 - Smart Systems Hub
 - Smartfren
 - SmarTone
 - SmartSky Networks
 - SmartWave Technologies
 - SMAWave (Shanghai SMAWave Technology)
 - SMBC (Sumitomo Mitsui Banking Corporation) Group
 - SMC (Samsung Medical Center)
 - SMC Corporation
 - SMS Group
 - SMT (Shanghai Maglev Train)
 - Snam
 - SNC Former
 - SNCF (French National Railways)
 - SNEF Group
 - SNEF Telecom
 - SNUBH (Seoul National University Bundang Hospital)
 - Sobey Networks
 - Sociedad Portuaria Puerto Bahia
 - Socionext
 - Sodra
 - SoftBank Group
 - SoftBank Robotics
 - Softil
 - Softing
 - Software AG
 - Soitec
 - Sol Internet of People
 - Solectek Corporation
 - SOLiD
 - Solid IT Networks
 - Solidtronic
 - SOLIS (Solis Tower Telecom)
 - Soliton Systems
 - Solteq
 - Solvay
 - Sonic Communications
 - Sonim Technologies
 - Sonoma County Fairgrounds
 - Sony Group Corporation
 - Sony Wireless Communications
 - Sooktha
 - Soracom
 - Sougou Shouken
 - Sound Transit
 - Source Photonics
 - South Australia Department for Infrastructure and Transport
 - South Carolina ORS (Office of Regulatory Staff)
 - South Gloucestershire Council
 - South London and Maudsley NHS Foundation Trust
 - South Westphalia University of Applied Sciences
 - South32
 - Southern Adriatic Sea Port Authority
 - Southern Company
 - Southern Copper Corporation
 - Southern Linc
 - SPA (Santos Port Authority)
 - SPA (Scottish Police Authority)
 - Space Compass
 - Space Data Corporation
 - SpaceBridge
 - Spacecom
 - SpaceX
 - Spanish Army
 - Spanish Ministry of Interior
 - Spanish Navy
 - Spanish Red Cross
 - Spark New Zealand
 - Sparro (WCI Technologies)
 - Spectra Group
 - SpectraRep
 - Spectre
 - Spectris
 - Spectronite
 - Spectronn
 - Spectrum Effect
 - Speedcast
 - Speedway Motorsports
 - SPF (Singapore Police Force)
 - SPI (Saha Pathana Inter-Holding)
 - Spideradio (Suzhou Spideradio Telecommunication Technology)
 - SPIE Group
 - Spirent Communications
 - SPIRIT DSP
 - SPL (Stratospheric Platforms Limited)
 - Sporton International
 - Sporveien
 - Sprint (T-Mobile US)
 - SPT (Strathclyde Partnership for Transport)
 - SPTel
 - Spy Ego Media - SEMCOMM
 - SQUAN
 - Squire Technologies
 - SRA Holdings
 - SRS (Software Radio Systems)
 - SRTC (France)
 - SRTechnology
 - SS&E (Spurs Sports & Entertainment)
 - SSA Marine (Carrix)
 - SSAB
 - SSC (Shared Spectrum Company)
 - SSE (Sharks Sports & Entertainment)
 - SSi Canada
 - SSI SCHAFER
 - SSS Public Safety
 - ST (STMicroelectronics)
 - ST Engineering iDirect
 - St John New Zealand
 - St. Luke's Health System
 - St. Marianna University School of Medicine
 - St. Vrain Valley School District
 - Stadicom
 - Stadtpolizei Zurich (Zurich City Police)
 - Stadtwerke Andernach
 - Standard Steel
 - Stanford University
 - Stanmore Coal
 - Stanmore Resources
 - Stanwell Corporation
 - Star Microwave
 - Star Solutions
 - StarHub
 - StarPoint (Beijing StarPoint Technology)
 - STC (Saudi Telecom Company)
 - STC Bahrain
 - STC Kuwait
 - STCSC (STC Specialized)
 - Stedin
 - Steep
 - Stellantis
 - Stena Line
 - STEP CG
 - Steveco
 - STI (San Antonio Terminal Internacional)
 - STILL (KION Group)
 - STL (Sterlite Technologies Ltd.)
 - Stockholm Metro
 - Stockyards Heritage Development
 - Stoen Operator
 - Stop Noise
 - Stora Enso
 - STORDIS
 - sTraffic
 - Strata Worldwide
 - Stratford Coal (Yancoal Australia)
 - Streambox
 - Streamwide
 - Strict B.V.
 - Strigo (TerreStar Solutions)
 - Stromnetz Berlin
 - STS (Special Telecommunications Service, Romania)
 - Sturmsfs
 - SUAPE (Suape Port & Industrial Complex)
 - Subaru Corporation
 - Subex
 - Subtel (Undersecretariat of Telecommunications, Chile)
 - SUEK
 - SUEZ
 - Suffolk County Sheriff's Department
 - Sultanah Bahiyah Hospital
 - Sultanah Maliha Hospital
 - Sumitomo Corporation
 - Sumitomo Electric Industries
 - Sumitomo Metal Mining
 - Sumitomo Shoji Machinex
 - Summa Networks
 - Summit Steel
 - Summit Tech
 - Summit Technology
 - Suncor Energy
 - Sunderland City Council
 - Sunrise
 - Sunsea AIoT Technology
 - Sunwave Communications
 - SUNY (State University of New York)
 - SUPCON
 - Superior Gold
 - Supermercados MAS (MAS Supermarkets)
 - Supermicro (Super Micro Computer)
 - Suranaree University of Technology
 - Sure Falkland Islands
 - Sure South Atlantic
 - SureSite Consulting Group
 - SURF
 - Surgutneftegas
 - Surrey Heath Borough Council
 - Surrey Police
 - SUSE
 - SUTD (Singapore University of Technology and Design)
 - Suzhou Metro
 - Suzhou Police
 - SVP (Strategic Venue Partners)
 - SVT (Sveriges Television)
 - Swans Trail Farms
 - Swedish Ministry of Justice
 - Swedish Olympic Academy
 - Swindon Borough Council
 - Swisscom
 - Swisscom Broadcast
 - Swissphone
 - Switch
 - Swoop Aero
 - SWR (Sudwestrundfunk)
 - SWS (Shanghai Waigaoqiao Shipbuilding)
 - Sycomp
 - SYKE (Finnish Environment Institute)
 - Sylincom (Beijing Sylincom Technology)
 - SynaXG Technologies
 - Synctechno
 - Syngenta
 - Synhelion
 - Syniverse
 - SYRTEM
 - SYSCOM (Mexico)
 - Sysoco (Axians/VINCI Energies)
 - Systech Corporation
 - Systel (Systemes & Telecommunications)
 - System Innovation Group
 - Systemics-PAB
 - Szechenyi Istvan University
 - T&W (Shenzhen Gongjin Electronics)
 - T-2 (Slovenia)
 - T2M
 - t3 Broadband
 - Tacora Resources
 - TacSat Networks
 - Tage I-Driver
 - Taipei City Hospital
 - Taipei Rapid Transit Corporation
 - Taisei Corporation
 - Taishan Fiberglass
 - Tait Communications
 - Taiwan Mobile
 - Taiwan National Police Agency
 - Taiwan Star Telecom
 - TAIYO YUDEN
 - Taiyuan Iron & Steel Group
 - Takaoka Cable Network
 - Takashima Municipal Hospital
 - Takeda Pharmaceutical Company
 - Takenaka Corporation
 - Talgo
 - Talia Communications
 - Talison Lithium
 - Talk-IP International
 - Talkpod Technology
 - Tamagawa Holdings
 - Tambora Systems
 - Tampa Electric (TECO Energy)
 - Tampa General Hospital
 - Tampa Microwave
 - Tampere University
 - Tampnet
 - Tangenborgh
 - Tango Networks
 - Tango Tango
 - Tangshan Port Group
 - Taoglas
 - Tarana Wireless
 - TASSTA
 - Tata Communications
 - Tata Elxsi
 - Tata Power
 - Tatfook (Shenzhen Tatfook Technology)
 - Tatneft
 - TAURON Dystrybucja
 - Tavistock Group
 - TAWAL
 - Tazca Connects
 - TBN (Trinity Broadcasting Network)
 - TBS (Tokyo Broadcasting System) TV
 - TCA (Trusted Connectivity Alliance)
 - TCCA (The Critical Communications Association)
 - TCIL (Telecommunications Consultants India Limited)
 - TCL Communication
 - TCOM
 - TCP (Paranagua Container Terminal)
 - TCS (Tata Consultancy Services)
 - TCTS (Tata Communications Transformation Services)
 - TD Tech
 - TDC NET
 - TDCOMM
 - TDF
 - TDK Electronics
 - TDRA (Telecommunications and Digital Government Regulatory Authority, UAE)
 - TE Connectivity
 - Teal Communications
 - Team Telecom Armenia
 - TECALED
 - Tech Mahindra
 - Techbros
 - techUK
 - Teck Resources
 - Tecnologico de Monterrey
 - Tecom
 - Tecore Networks
 - Tejas Networks
 - TEKTELIC Communications
 - Tel Aviv Light Rail
 - Telco Systems
 - Telcofan
 - Telcoware
 - Teldat
 - Tele2
 - Tele2 Russia
 - Telebras
 - Telecom Argentina
 - Telecom CLM (Telecom Castilla-La Mancha)
 - Telecom Egypt
 - Telecom Namibia
 - Telecom26
 - Teleena (Tata Communications MOVE)
 - Telefield
 - Telefonica Broadcast Services
 - Telefonica Germany
 - Telefonica Group
 - Telefonica Tech
 - Telefonica UK
 - Telekom Slovenije
 - Telenet
 - Telenor Denmark
 - Telenor Group
 - Telenor Maritime
 - Telenor Sweden
 - Telent
 - TeleRetail
 - Telesat
 - Teleservice Skane
 - Telespazio
 - Teleste
 - Telesur (Suriname)
 - TELESYS (Brazil)
 - teleSys Software
 - Telet Research
 - Televate
 - Teleware
 - Telewave
 - TeleWorld Solutions
 - Telia Company
 - Telia Finland
 - Telia Norway
 - Telit Cinterion
 - Telkom (PT Telkom Indonesia)
 - Telkom Kenya
 - Telkom South Africa
 - Telkomsel
 - Tellabs
 - Tellion
 - Telmex
 - Telna
 - TELNET Redes Inteligentes
 - TELOX (Telo Systems)
 - Telpass
 - Telrad Networks
 - Telsasoft
 - Telstar-Hommel
 - Telstra
 - Telstra Purple
 - Teltech Group
 - Teltonika
 - Teltronic
 - Telus
 - TEN (Texas Energy Network)
 - Teocalli Partners
 - TEOCO
 - Teracom
 - Teradek
 - Teradyne
 - TeraGo
 - Tera-Pass
 - Terrafame
 - Terranet Communications
 - Tesla
 - Tessares
 - TESSCO Technologies
 - Texas A&M University
 - Texas DPS (Department of Public Safety)
 - Texas Management Group
 - Texas State University
 - TfL (Transport for London)
 - TGS (Tecore Global Services)
 - TH Koln (Cologne University of Applied Sciences)
 - TH Lubeck (Technical University of Lubeck)
 - TH OWL (OWL University of Applied Sciences and Arts)
 - THA (Technical University of Applied Sciences Augsburg)
 - Thaicom
 - Thales
 - Thales Alenia Space
 - Tham Luang Cave Rescue
 - THB (Brandenburg University of Applied Sciences)
 - THD/DIT (Deggendorf Institute of Technology)
 - The R&A
 - THEIA ENERGY (France)
 - Thiess
 - ThinkRF
 - THK
 - Thorcom Systems
 - Three Group Solutions
 - Three Hong Kong
 - Three Ireland
 - Three Sweden
 - Thundercomm
 - Thuraya
 - TI (Texas Instruments)
 - TIA (Telecommunications Industry Association)
 - Tianjin Port Group
 - Tianyi (Sichuan Tianyi Comheart Telecom)
 - Tibco Telecoms
 - Tibet Huatailong Mining Development
 - Tidal Network
 - TietoEVRY
 - Tigo Colombia
 - Tillman Digital Cities
 - Tillman Global Holdings
 - Tilson
 - TIL-TEK Antennae
 - TIM (Telecom Italia Mobile)
 - TIM Brasil
 - Tioga Electronic Assembly
 - TIP (Telecom Infra Project)
 - TIRI (Tokyo Metropolitan Industrial Technology Research Institute)
 - Titan ICT
 - Titan.ium Platform
 - TJ Innovation
 - TK Elevator
 - TKK Corporation
 - TLC Solutions
 - TM (Telekom Malaysia)
 - T-Mobile Poland
 - T-Mobile US
 - TMYTEK (TMY Technology)
 - TNB (Tenaga Nasional Berhad)
 - TNO (Netherlands Organization for Applied Scientific Research)
 - TNS (Transaction Network Services)
 - TNT Sports (Formerly BT Sport)
 - TO21COMMS
 - Toba National College of Maritime Technology
 - Tofane Global
 - Tokachi Murakami Ranch
 - TOKAI Cable Network Corporation
 - TOKIE (Irvees Technology)
 - Tokyo Development Foundation for Agriculture, Forestry and Fisheries
 - Tokyo Metro
 - Tokyo Metropolitan Government
 - Tokyo Metropolitan Police Department
 - Tokyo Metropolitan University
 - Tokyo Tech (Tokyo Institute of Technology)
 - Tokyu Land Corporation
 - Tokyu Railways
 - Tolko Industries
 - TOMIA
 - Tongyu Communication
 - ToooAir
 - Topcon Positioning Group
 - TorkHub
 - Toronto Police Service
 - Toshiba Corporation
 - Toshiba Infrastructure Systems & Solutions
 - TotalEnergies
 - TOTE Maritime Alaska
 - Totogi
 - TOUA (Tohono O'odham Utility Authority)
 - Toulouse Metropole
 - TowerEye (Belgium)
 - TowerJazz
 - Town of Orangeville
 - Toyota Group
 - Toyota Material Handling
 - Toyota Motor Corporation
 - Toyota Motor East Japan
 - TPEC (Toyota Production Engineering Corporation)
 - TPG Telecom
 - TPL Systemes
 - TP-Link Technologies
 - TRA (Telecommunications Regulatory Authority, Bahrain)
 - Traficom (Transport and Communications Agency, Finland)
 - Trafikverket (Swedish Transport Administration)
 - TRAI (Telecom Regulatory Authority of India)
 - TRAINOSE
 - Transatel
 - Transdev
 - Transit Wireless
 - Transnet
 - Transocean Group
 - TransPacket
 - Travekom (Stadtwerke Lubeck)
 - Trend Micro
 - Trenitalia
 - Trialink (Russia)
 - TriaSys Technologies Corporation
 - Tribal Ready
 - Trident Seafoods
 - Trilogy Networks
 - Trilogy NextGen
 - Trinidad & Tobago Ministry of National Security
 - Trinity College Dublin
 - TRIOPT
 - Triorail
 - Trivale Tecnologia
 - Troiline (Stadtwerke Troisdorf)
 - Tropico
 - TROY Information
 - TruAccess Networks
 - TrueMove H (True Corporation)
 - TRUMPF
 - Truphone
 - TRX Systems
 - TS/KOSTA (Korea Transportation Safety Authority)
 - TSDSI (Telecommunications Standards Development Society, India)
 - Tsinghua Unigroup
 - TSMC (Taiwan Semiconductor Manufacturing Company)
 - Tsofun
 - TST (Tonami Satellite Communication Television)
 - TST Systems
 - Tsunagu Net Communications (Arteria Networks)
 - T-Systems International
 - TTA (Telecommunications Technology Association, South Korea)
 - TTC (Telecommunication Technology Committee, Japan)
 - TTG International
 - TTM Technologies
 - TU Clausthal (Technical University of Clausthal)
 - TU Darmstadt (Technical University of Darmstadt)
 - TU Dortmund University
 - TU Dresden (Dresden University of Technology)
 - TU Graz (Graz University of Technology)
 - TU Ilmenau (Technical University of Ilmenau)
 - TU Kaiserslautern (Technical University of Kaiserslautern)
 - TU Wien (Vienna University of Technology)
 - TU/e (Eindhoven University of Technology)
 - TUKE (Technical University of Kosice)
 - Tukwila School District
 - TUL (Technical University of Liberec)
 - TUM (Technical University of Munich)
 - Tupl
 - Turk Telekom
 - Turkcell
 - Turkish Armed Forces
 - Turkish National Police
 - Turku AMK (Turku University of Applied Sciences)
 - Turku University Hospital
 - Tustin Unified School District
 - TUSUR (Tomsk State University of Control Systems and Radioelectronics)
 - TUV Rheinland
 - TUV UD
 - TUViT
 - TV 2
 - TV Azteca (Grupo Salinas)
 - TVBS
 - TVEL Fuel Company (Rosatom)
 - Twente Airport
 - TWFRS (Tyne and Wear Fire and Rescue Service)
 - Twilio
 - Two Six Labs
 - Tyler Technologies
 - U.S. Air Force
 - U.S. Army
 - U.S. Cellular
 - U.S. Coast Guard
 - U.S. DARPA (Defense Advanced Research Projects Agency)
 - U.S. Department of Commerce
 - U.S. DHS (Department of Homeland Security)
 - U.S. DIU (Defense Innovation Unit)
 - U.S. DOD (Department of Defense)
 - U.S. DOE (Department of Energy)
 - U.S. DOJ (Department of Justice)
 - U.S. FAA (Federal Aviation Administration)
 - U.S. FBI (Federal Bureau of Investigation)
 - U.S. FCC (Federal Communications Commission)
 - U.S. FEMA (Federal Emergency Management Agency)
 - U.S. Marine Corps
 - U.S. NASA (National Aeronautics and Space Administration)
 - U.S. National Guard
 - U.S. Navy
 - U.S. NIST (National Institute of Standards and Technology)
 - U.S. NPSTC (National Public Safety Telecommunications Council)
 - U.S. NREL (National Renewable Energy Laboratory)
 - U.S. NSA (National Security Agency)
 - U.S. NSF (National Science Foundation)
 - U.S. NTIA (National Telecommunications and Information Administration)
 - U.S. Space Force
 - U.S. VA (Department of Veterans Affairs)
 - UAE Armed Forces
 - UAE MOI (Ministry of Interior)
 - UAI (Adolfo Ibanez University)
 - UANGEL
 - UBBA (Utility Broadband Alliance)
 - UBC (University of British Columbia)
 - UBCS
 - Ubicquia
 - Ubiik
 - UBiqube
 - Ubiquoss
 - Ubiwhere
 - U-Blox
 - UBT (University for Business and Technology, Kosovo)
 - Ucloudy (Shanghai Ucloudy Information Technology)
 - UCN (Catholic University of the North)
 - UConn (University of Connecticut)
 - UCONSYSTEM
 - UCSB (University of California, Santa Barbara)
 - UCtel
 - UDD (Universidad del Desarrollo)
 - UDE (University of Duisburg-Essen)
 - UdeC (University of Concepcion)
 - Udokan Copper
 - UEC-Perm Engines
 - UET (United Electronic Technology)
 - UETN (Utah Education and Telehealth Network)
 - UFCG (Federal University of Campina Grande)
 - UfiSpace
 - UFL (United Football League)
 - UGL
 - UHB (University Hospitals Birmingham NHS Foundation Trust)
 - UIC (International Union of Railways)
 - UIPA (Utah Inland Port Authority)
 - UISA
 - UK Power Networks
 - UK5G Innovation Network
 - UKAEA (United Kingdom Atomic Energy Authority)
 - UKB (University Hospital Bonn)
 - UKD (University Hospital of Dusseldorf)
 - UKE (Office of Electronic Communications, Poland)
 - UKSH (University Hospital Schleswig-Holstein)
 - UL
 - ULAK Communication
 - Ultimatek (Russia)
 - UltiSat
 - Ultraband Technologies
 - UMC (United Microelectronics Corporation)
 - UMC (University Medical Center) Utrecht
 - UMCG (University Medical Center Groningen)
 - Umea University
 - Umlaut
 - UMMC (Ural Mining and Metallurgical Company)
 - UMS (United Monolithic Semiconductors)
 - UN (United Nations)
 - UNAB (Andres Bello National University)
 - UNC (University of North Carolina) Health
 - Uniadex
 - UNIBERG
 - UNIFE (The European Rail Supply Industry Association)
 - Unifique
 - Unikie
 - UNIMO Technology
 - Unipart Manufacturing
 - UniSantaCruz (Santa Cruz University Center)
 - UNISOC
 - UniStrong
 - UNITAC Technology
 - United Hatzalah
 - United Kingdom Home Office
 - UniTTEC
 - University Center of FEI
 - University Hospital Aachen
 - University Hospitals Coventry & Warwickshire NHS Trust
 - University of Augsburg
 - University of Aveiro
 - University of Bristol
 - University of Chile
 - University of Cincinnati
 - University of Cologne
 - University of Extremadura
 - University of Fukui Hospital
 - University of Glasgow
 - University of Helsinki
 - University of Illinois at Urbana-Champaign
 - University of La Serena
 - University of Leipzig
 - University of Limerick
 - University of Lincoln
 - University of Malaga
 - University of Miami
 - University of Michigan
 - University of Murcia
 - University of Nebraska-Lincoln
 - University of Oulu
 - University of Oviedo
 - University of Palermo
 - University of Patras
 - University of Pennsylvania
 - University of Regina
 - University of Sheffield
 - University of Strathclyde
 - University of Stuttgart
 - University of Sunderland
 - University of Surrey
 - University of Thessaly
 - University of Tokyo
 - University of Tsukuba
 - University of Twente
 - University of Utah
 - University of Vaasa
 - University of Vigo
 - University of Virginia
 - University of Warwick
 - University of Waterloo
 - University of Windsor
 - University of Wuppertal
 - University of York
 - University of Zagreb
 - University of Zilina
 - Unizyx Holding Corporation
 - UNM (University of New Mexico)
 - UPB (Politehnica University of Bucharest)
 - UPC/BarcelonaTech (Universitat Politecnica de Catalunya)
 - UPLA (University of Playa Ancha)
 - UPS (United Parcel Service)
 - UPS Flight Forward
 - UPV (Polytechnic University of Valencia)
 - Uralkali
 - UrFU (Ural Federal University)
 - UROS
 - URSYS
 - Urumqi Metro
 - US Digital Designs
 - USACH (University of Santiago)
 - USC (University of Southern California)
 - Ushino Nakayama
 - USI (Universal Scientific Industrial)
 - USM (Federico Santa Maria Technical University)
 - USP (University of Sao Paulo)
 - USSOCOM (U.S. Special Operations Command)
 - UT (University of Tennessee, Knoxville)
 - UTAC
 - UTalca (University of Talca)
 - UTC (Utilities Technology Council)
 - UTCAL (Utilities Telecom & Technology Council America Latina)
 - UTEM (Metropolitan University of Technology, Chile)
 - Utility (Utility Associates)
 - Utility Connect
 - UTM (Universiti Teknologi Malaysia)
 - UTS (University of Technology Sydney)
 - UTStarcom
 - UV (University of Valparaiso)
 - UVM (University of Vina del Mar)
 - UW (University of Washington)
 - UWM (University of Wisconsin-Milwaukee)
 - UZA (Antwerp University Hospital)
 - V&M (Venus & Mercury) Telecom
 - V2COM
 - V5 Systems
 - Vale
 - Valencia City Council
 - Valid (Brazil)
 - Valid8
 - VALL Technologies
 - Valmet
 - Valtra
 - Vancouver Fire Rescue Services
 - Vankom Technology
 - Vantage Towers
 - Vantiva (Formerly Technicolor)
 - Vanu
 - VAPAR Innovation
 - Vapor IO
 - Var Energi
 - VARTA
 - Vattenfall
 - Vavitel (Shenzhen Vavitel Technology)
 - VCK Logistics
 - VDI (Virginia Diodes, Inc.)
 - VDMA (German Mechanical and Plant Engineering Association)
 - Vector Data
 - Veea
 - Velaspan
 - Velocity (Butler Rural Electric Cooperative)
 - Vendee Chamber of Agriculture
 - Ventev
 - VEON
 - Verana Networks
 - Verdant Leisure
 - Verizon Business
 - Verizon Communications
 - Verkotan
 - Versa Networks
 - Vertel
 - Vertex System Corporation (Coiler Corporation)
 - Vertical Bridge
 - Vertiv
 - Verveba Telecom
 - Vestas
 - VHT (Viettel High Tech)
 - Vi (Vodafone Idea)
 - ViaPath Technologies (GTL)
 - Viasat
 - VIAVI Solutions
 - Victoria Police
 - VicTrack
 - VIDA Technologies
 - Videotron
 - Vienna International Airport
 - Vientiane Municipal Government
 - Viesgo Distribucion
 - Viettel Group
 - View (View Smart Windows)
 - Viggo (Netherlands)
 - Vigilate
 - Vigo Port Authority
 - Vilicom
 - Vimy Resources
 - VINCI Energies
 - Vingroup
 - VinSmart
 - Viper RF
 - Viprinet
 - ViPRO Corporation
 - VIR (Virginia International Raceway)
 - Virgin Media O2
 - Virginia Tech (Virginia Polytechnic Institute and State University)
 - Virtual Access
 - Virtueyes
 - Virtusa Corporation
 - Visionable
 - Vislink Technologies
 - Vista Unified School District
 - Visual Labs
 - VIT (Virginia International Terminals)
 - Vital (New Zealand)
 - VITES
 - Vivint
 - Vivo
 - Vivo (Telefonica Brasil)
 - VMware
 - VNC (Virtual NetCom)
 - VNC Automotive
 - VNIIZhT (Research Institute of Russian Railways)
 - VNL (Vihaan Networks Limited)
 - VNPT (Vietnam Posts and Telecommunications Group)
 - Vocus
 - Vodacom Group
 - Vodafone Business
 - Vodafone Czech Republic
 - Vodafone Germany
 - Vodafone Group
 - Vodafone Hungary
 - Vodafone Italia
 - Vodafone Portugal
 - Vodafone Qatar
 - Vodafone Spain
 - Voentelecom
 - VoerEir
 - VoiceAge Corporation
 - Voipfuture
 - VolkerWessels Telecom
 - Volkswagen Group
 - Volvo CE (Construction Equipment)
 - Volvo Trucks
 - Voxer
 - VPA (Virginia Port Authority)
 - VR Group (Finnish State Railways)
 - Vroon
 - Vroove (Japan)
 - VSB-TUO (Technical University of Ostrava)
 - VTT Technical Research Centre of Finland
 - VTTI (Virginia Tech Transportation Institute)
 - Vubiq Networks
 - VUT/BUT (Brno University of Technology)
 - VVDN Technologies
 - Vy Group
 - Waalhaven Group
 - Wabtec Corporation
 - WAE Technologies
 - WAGO
 - Walker and Associates
 - Walmart
 - Walt Disney Company
 - Wanbao Mining
 - Wanhua Chemical
 - Wasatch County School District
 - Washington Maritime Blue
 - Washington Military Department
 - WAV
 - WAV4M
 - WAVE (AGC)
 - Wave Electronics (Korea)
 - Wave1
 - Wave-In Communication
 - Wavelabs
 - Wavemobile
 - Wavesight
 - Wavetel Technology
 - Waycare
 - Wayra (Telefonica Open Innovation)
 - Wazco
 - WBA (Walgreens Boots Alliance)
 - WBA (Wireless Broadband Alliance)
 - WCCTV (Wireless CCTV)
 - WCU (West Chester University)
 - WDNA (Wireless DNA)
 - WDR (Westdeutscher Rundfunk Koln)
 - Weaccess Group
 - Weavix
 - Webdyn
 - WebRadar
 - WEG
 - Weidmuller
 - Weisse Arena Group
 - Welotec
 - Welsh Ambulance Service
 - Welzow Airport
 - Wenzhou Rail Transit
 - West China Hospital of Sichuan University
 - West China Second University Hospital of Sichuan University
 - West Kentucky Rural Electric Cooperative Corporation
 - West Sussex County Council
 - Westcon-Comstor
 - Westell Technologies
 - WestEnd WiFi
 - Westermo Network Technologies
 - Western Australia Police Force
 - Westfalische Hochschule (Westphalian University of Applied Sciences)
 - Westminster City Council
 - Wevercomm
 - Wewins (Shenzhen Wewins Wireless)
 - WeWork
 - WG+E (Westfield Gas + Electric)
 - wgtwo (Working Group Two)
 - WH Bence Group
 - WHA Group
 - Whakaata Maori
 - Whale Cloud Technology
 - WHIN (Wabash Heartland Innovation Network)
 - Whirlpool
 - Whitehill & Bordon Regeneration Company
 - WhiteSpace Alliance
 - Whizz Systems
 - Widelity
 - Wien Energie
 - WiFrost
 - WIG (Wireless Infrastructure Group)
 - Wildox (Shenzhen Happy Technology)
 - Wilson Electronics
 - Wiluna Mining Corporation
 - Wilus
 - WIN Connectivity (Wireless Information Networks)
 - Wind River Systems
 - Wind Tre
 - Windsor Salt
 - WINGS ICT Solutions
 - Wingtech Technology
 - WINITECH
 - Winmate Communications
 - Winncom Technologies
 - WInnForum (Wireless Innovation Forum)
 - Winther Bredband
 - Wipro
 - Wireless Concepts International
 - Wireless Logic Group
 - Wireless Technologies Finland
 - Wireless Telecom Group
 - WISCO (Wuhan Iron & Steel Corporation)
 - WiSig Networks
 - Wi-Sky Queensland
 - WiSP Services
 - WISTA Management
 - Wistron Corporation
 - WITENO
 - Wiwynn
 - WIZCORE (South Korea)
 - WLH (Wirtschaftsforderung im Landkreis Harburg)
 - WM Systems
 - WMS (Wireless Maritime Services)
 - WNC (Wistron NeWeb Corporation)
 - Wolfspeed
 - Woodside Energy
 - WooriNet
 - Worcester Bosch
 - Workspace Group
 - Workz
 - World Mobile Group
 - World View
 - WorldCell Solutions
 - Wouxun (Quanzhou Wouxun Electronics)
 - WOWOW
 - Wright State University
 - Wroclaw Tech (Wroclaw University of Science and Technology)
 - WSP
 - WSU (Wichita State University)
 - WTL (World Telecom Labs)
 - WTW Electronic
 - Wuhan Metro
 - Wuhan Union Hospital
 - Wuhan Wuchang Hospital
 - Wujiang Public Security Bureau
 - WUT (Warsaw University of Technology)
 - Wutong Group
 - WWT (World Wide Technology)
 - Wytec International
 - X Shore
 - X4000 Communications
 - XAG
 - XAL (Xarxa Audiovisual Local)
 - Xantaro
 - XAVi Technologies Corporation
 - Xcel Energy
 - XCMG Group
 - XCOM Labs
 - xCraft Enterprises
 - Xelera Technologies
 - Xemex
 - Xena Networks
 - XGP (eXtended Global Platform) Forum
 - Xiamen BRT (Bus Rapid Transit)
 - Xiamen Metro
 - Xiamen Puxing Electronics Science & Technology
 - Xiamen Sanan Integrated Circuit
 - Xi'an Public Security Bureau
 - Xiaomi
 - Xilinx
 - Xinfengming Group
 - Xingtera
 - Xinwei Group
 - XINYI Information Technology
 - XipLink
 - XISC (Hunan Valin Xiangtan Iron & Steel Company)
 - XIUS
 - XL Axiata
 - XNET
 - XtremeLTE (Xtreme Enterprises)
 - Xylem
 - YADRO
 - YAGEO Corporation
 - Yahsat (Al Yah Satellite Communications)
 - YaleBTS
 - Yamana Gold
 - Yamazaki Mazak Corporation
 - Yancoal Australia
 - Yankuang Energy Group
 - Yanton (Quanzhou Yanton Electronics)
 - Yara International
 - Yaskawa Electric Corporation
 - YATEC (Yakut Fuel and Energy Company)
 - Yawata Electrode (Thailand)
 - YBVR (Yerba Buena VR)
 - Yes24
 - Yingkou Port Group
 - Yinhawangka Aboriginal Corporation
 - Yle (Yleisradio)
 - YOFC (Yangtze Optical Fibre and Cable)
 - Yokogawa Electric Corporation
 - Yokowo
 - Yonsei University
 - Yorkshire Water
 - Youngor Group
 - YPC (Yangzi Petrochemical Company)
 - YTcom
 - Yuge Technology (Shanghai Yuge Information Technology)
 - YUHS (Yonsei University Health System)
 - Yuma School District
 - Yumeshima Container Terminal
 - Yunzhi Ruantong (Beijing Yunzhi Ruantong Information Technology)
 - Zain Group
 - Zain Saudi Arabia (Zain KSA)
 - ZaiNar
 - Zambian Ministry of Home Affairs and Internal Security
 - Zaragoza Fire Department
 - Zaram Technology
 - Zayo Group
 - Z-Com
 - Zealync
 - Zebra Technologies
 - Zeetta Networks
 - ZEISS
 - Zello
 - ZeMA (Center for Mechatronics and Automation Technology)
 - ZenFi Networks
 - Zengyi Technology
 - Zenith Minerals
 - Zenzic-UK
 - Zepcam
 - Zermatt Bergbahnen
 - ZeroEyes
 - Zetron
 - ZF
 - Zhejiang Provincial People's Hospital
 - Zhengkai Electronics (Jiangsu Zhengkai Electronics Technology)
 - Zhengzhou Metro
 - Zhengzhou Public Security Bureau
 - Zhongshan Public Security Bureau
 - Zhuhai Port Group
 - Zhungeer Energy
 - ZIEHL-ABEGG
 - Zijin Mining Group
 - ZILLNK
 - Zinwave
 - Zioncom
 - Zmtel (Shanghai Zhongmi Communication Technology)
 - ZNA (Antwerp Hospital Network)
 - ZoraBots (Zora Robotics)
 - ZT Systems
 - ZTE
 - ZTV (Japan)
 - Zuellig Pharma
 - ZVEI (German Electrical and Electronic Manufacturers' Association)
 - Zvezda Shipbuilding Complex
 - Zyfra
 - Zyter
 - Zyxel
  
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