| Mauer Ventures | Belgrade |
| mBrainTrain | Belgrade |
| MD Vsions | Belgrade |
| Media Marketing | Belgrade |
| Mega Computer Engineering | Belgrade |
| Megatrend Univerzitet | |
| Meris | Belgrade |
| MicroENV | South Bačka |
| Microgen Internet Consulting & Solutions | Belgrade |
| MICRONET d.o.o. | Belgrade |
| Microsoft Serbia | Belgrade |
| Mida Studio | Belgrade |
| Mikro Kontrol d.o.o. | Belgrade |
| MikroElektronika d.o.o. | Belgrade |
| MINE d.o.o. | Šumadija |
| Mirror Solutions Group | |
| MitrilGM | Belgrade |
| ML Konferencija | Belgrade |
| MM Studio | Belgrade |
| Monitor System d.o.o. | Belgrade |
| Movement | Belgrade |
| Multimedia Workshop | South Bačka |
| MVP Workshop | Belgrade |
| Naslovi.net Nauka & Tehnologija | Belgrade |
| Naučno-tehnološki park Beograd | Belgrade |
| Navigator d.o.o. | South Bačka |
| Nbgteam | Belgrade |
| Neobee.net | Belgrade |
| Neotek | Belgrade |
| Neparno 10 | Pomoravlje |
| Net++ technology | Belgrade |
| NetGames | Belgrade |
| Netiks | Belgrade |
| Netokracija d.o.o. | Belgrade |
| Netplanet | Belgrade |
| Netsector | Šumadija |
| NiCAT | Nišava |
| Ninet Company d.o.o. | Nišava |
| Niš University - Elektronski fakultet | Nišava |
| Noproblemsoft | Belgrade |
| Nordeus | Belgrade |
| Nordnet | North Bačka |
| Novkabel AD | South Bačka |
| Odmori se d.o.o. | Belgrade |
| Omni Logika d.o.o. | Belgrade |
| Omnicom Solutions d.o.o. | Belgrade |
| OR Copy | South Bačka |
| Otvoreni univerzitet Subotica | |
| OUR Hub | Belgrade |
| PAnet d.o.o. | South Banat |