| NetPublic Kft. | |
| Netsurf Távközlési Szolgáltató Kft. | Csongrád |
| NETvisor Zrt. | Budapest |
| Neuron Szoftver Zrt. | |
| Nevrotech | |
| NewFlow | |
| Nextent Informatika Zrt. | Budapest |
| Nexum Magyarország Kft. | Csongrád |
| Ngw Capital Kft. | Budapest |
| Nivelco Process Control Co. | Budapest |
| NNG Software Developing and Commercial, LLC | Budapest |
| NordTelekom | |
| Novocomp Informatika Kft. | Budapest |
| Novodata | |
| Novofer Zrt. | Budapest |
| Novopayment | |
| NOW Technologies | |
| NT-Service Kft. | Budapest |
| Nuage Groupe | |
| Oázis Computer Kft. | |
| OfficeFinder.hu | |
| officerentinfo.hu | |
| Oleander Infromatikai Kft. | Borsod-Abaúj-Zemplén |
| Omixon Biocomputing Ltd | |
| Omnicoach | |
| Online Marketing Akadémia | Budapest |
| Online Üzleti Informatika Zrt. | Budapest |
| Online Üzleti Intelligencia Ltd | Budapest |
| Onlinet Group | Budapest |
| OnLiveIT | Budapest |
| Opennetworks Kft. | |
| Ordit | |
| Organochem Ltd | |
| OrgMapper | |
| Orgware Kft. | |
| Oriana | |
| Orion Electronics Kft. | Budapest |
| Országos Mozgásszervi Intézet | |
| OrthoGraph | Budapest |
| OTP Bank Nyrt. | Budapest |
| Otthon Centrum | |
| OXO Labs Ltd | Budapest |
| Ozeki Ltd | Hajdú-Bihar |
| Pallas Communications Kft. | Győr-Moson-Sopron |
| Pannako | Győr-Moson-Sopron |
| Pannon Gazdasági Hálózat Egyesület | |
| PannonPharma | |
| Park Digital Technologies kft. | |
| PartnerTech Kft. | |
| PastPy | |