| Metatags Company B.V. | Friesland |
| Metaverses | South Holland |
| Metaware B.V. | Groningen |
| Metrica Sports | |
| Mezanet Interactieve Media | North Holland |
| MI Consultancy | South Holland |
| Mibo | North Holland |
| Mic-Media | North Brabant |
| Microdesign | South Holland |
| Microfix | South Holland |
| Micros Internetdiensten B.V. | South Holland |
| Microsign | Overijssel |
| Microsmart ICT | |
| Microsoft Netherlands | North Holland |
| Microsoft365.pro | Utrecht |
| MicroStar B.V. | North Holland |
| Microsure | |
| Mighty Consulting Services | South Holland |
| Mihos.net | North Holland |
| MijnHostingPartner.nl | Utrecht |
| Mijnwebserver | Utrecht |
| Mijnwebwinkel | |
| MILabs B.V. | |
| Milestre B.V. | Limburg |
| Million Monkeys | North Holland |
| Mimetas B.V. | |
| Mimir | South Holland |
| Mindscape B.V. | North Holland |
| Mindtime Backup B.V. | Overijssel |
| Mingly | |
| Mingos | North Holland |
| Minipak Software | Overijssel |
| Minite Works B.V. | |
| MINIX 3 | North Holland |
| Minkels | North Brabant |
| Minox | Utrecht |
| Mint Interactive | South Holland |
| mintBlue | North Holland |
| Mior ICT Diensten | North Brabant |
| Mirage ICT-Services B.V. | North Holland |
| Miraweb | |
| Misabi Testmanagement | |
| Mithun Training | Utrecht |
| MixCom | Overijssel |
| Mixit | South Holland |
| Miyagami | |
| MKG Nederland B.V. | Overijssel |
| ML Multimedia | Overijssel |
| MM Guide B.V. | Utrecht |
| MMW Capital B.V. | |