| Mobitel B.V. | |
| Mobito Technology SRL | |
| Modern Tribe | |
| Mondialtelecom | |
| Moneytrans | |
| Monimmo | |
| MonkeyProof | East Flanders |
| Mono Company B.V. | East Flanders |
| MonSiteAMoi | Hainaut |
| Montis Biosciences | |
| Moonbeetle | Antwerp |
| Moovly | |
| Moro Tech | |
| morphemZero | Namur |
| moveUP | |
| Movify S.R.L. / B.V. | |
| Movu Robotics | |
| Mpleo | |
| MRM Health N.V. | |
| MRSolutions.be | Limburg |
| Multi-OS Informatica S.A. | Hainaut |
| Multicap | Antwerp |
| MVconcepts | |
| MyCellHub | |
| Myconsultation.be | |
| MyData-TRUST | |
| myNEO | |
| MyOwn S.R.L. | Brussels-Capital |
| N-Side | |
| Nakatomi | Liège |
| Namahn | Brussels-Capital |
| NameWeb B.V.B.A. | Antwerp |
| NannyML | |
| Nano Flow | |
| Nanopixel B.V.B.A. | |
| Napoleon Games N.V. | |
| Natch Europe | East Flanders |
| Nationaal Geografisch Instituut | |
| National Control Systems S.A. | Brussels-Capital |
| Natlanco N.V. | East Flanders |
| NATO Communications and Information Agency | |
| Navitrans | |
| ND IT Solutions | Flemish Brabant |
| Nectil S.A. | Brussels-Capital |
| Nelissen computers B.V.B.A. | |
| Neologic Vision | |
| Net IT N.V. | |
| Net7 S.A./N.V. | Walloon Brabant |
| Netaxis Solutions | |
| Netcew B.V. | |