| MIcroWeb Hellas | Attica |
| Minitek.gr | Attica |
| MIT Enterprise Forum Greece | Attica |
| MLS Πληροφορική Α.Ε. | Central Macedonia |
| Mobius-Datalex AE | Attica |
| MP & Associates | Attica |
| Msystems | |
| Multi Travel | Attica |
| MultiHosting | Attica |
| Multisoft Engineering | Attica |
| Mundo GR | Attica |
| MUSE Robotics, Inc. | Attica |
| mybusiness360 | Central Macedonia |
| Nadenco | |
| Naftilos Technology Stores | Attica |
| Naftilosweb | Attica |
| Natech Financial Software | Attica |
| National Center for Scientific Research "Demokritos" | Attica |
| National Centre for Scientific Research "Demokritos" - Institute of Informatics and Telecommunications | Attica |
| National Centre for Scientific Research Demokritos | |
| National Kapodistrian University of Athens | |
| National Technical University of Athens - Department of Mathematics | Attica |
| National Technical University of Athens - School of Electrical and Computer Engineering | Attica |
| NBW Internet Wizards | |
| NeatCSS | Attica |
| Nelios | Attica |
| Net 'n' Design | |
| Net Media | Attica |
| Net One | Attica |
| Net Root | |
| Net360 | Attica |
| Netculture | Attica |
| NetDesigns.gr | Attica |
| NetPixel | Attica |
| Netscope S.A. | Attica |
| NetSteps | |
| Netstudio | Attica |
| Netstudio | |
| Netwar | Attica |
| netWire | Attica |
| Netwise DMC | |
| NETWORK Educational Group | |
| Neunen IKE | Central Macedonia |
| Neurosoft S.A. | Attica |
| New Media | Attica |
| Newsphone | |
| Newtech | Attica |
| Nitro Web Development | Central Macedonia |
| Noemax Technologies Ltd | Attica |
| Noetik | Attica |