| Name | ITU-R | ITU-T | ITU-D | Categories |
| Ministry of Digital Affairs, Warszawa | ADMIN | |||
| Office of Electronic Communications, WARSAW | ADMIN RELATED / REGULATOR | |||
| Orange Polska S.A., WARSAW | X | X | ROA | |
| Polkomtel Sp. z o.o., WARSAW | X | X | ROA | |
| Systemics-PAB sp. z o.o., Warsaw | ASSOCIATE SG2 | SIO / SERVICE PROVIDER |
Academia
| Name | Category |
| National Institute of Telecommunications, WARSAW | UNIVERS,RSRCH |