| Microdata Telecom AB | Stockholm |
| MicroMove | |
| Micronic Laser Systems AB | Stockholm |
| Micropter AB | Västra Götaland |
| microServiceBus.com | |
| Microsoft Sweden | Stockholm |
| Midnight Hub AB | |
| Midrange AB | Uppsala |
| Migränhjälpen Norden AB | |
| Mild Media AB | |
| Milepost | |
| Milkywire AB | |
| Milton Medtech | |
| Mimbly AB | |
| Mimer Information Technology AB | Uppsala |
| MIMSI Materials AB | |
| Min Doktor | |
| Minalyze | |
| Minc | Skåne |
| MindArk PE AB | |
| Mindbite AB | Kalmar |
| Mindforce Game Lab | |
| Mindler AB | |
| Mindmore | |
| Mindville | Stockholm |
| Mine Storage International AB | |
| Minesto AB | |
| Ministry of Programming | |
| Minna Technologies | |
| Minnity AB | |
| MinSläkt | Skåne |
| Mînut | |
| Miss Hosting | |
| MissDomain AB | Stockholm |
| Mitigram AB | Stockholm |
| Mittuniversitetet | Västernorrland |
| mkmedia | |
| Moank AB | |
| Moberg Pharma AB (publ) | |
| Mobigo | Skåne |
| Mobila Doktorn | |
| Mobile Heights | |
| Mobile Interaction | |
| Mobility46 | |
| Mobiplus | Västra Götaland |
| Moblrn | |
| Mocki | |
| Moderna Försäkringar | |
| Modular Data Centers Stockholm A | Stockholm |
| Modular Finance AB | |