| Mathem | |
| Matteappen Magma | |
| Matters Group | |
| Mavenoid AB | |
| MCH Konsulting Sweden | Västmanland |
| Meal Makers | |
| Measure & Change AB | |
| Medarca AB | |
| MedBeat | |
| Mediakoncept i Sverige AB | |
| MediaLaget i Småland AB | Kronoberg |
| Mediatool World W AB | |
| Medicheck | |
| Medicon Village | |
| Medicorent Int. AB | |
| Mediplast AB | |
| Medivir AB | |
| Medivir AB | |
| Medoma AB | |
| Medow | |
| Medpeople | |
| Meela | |
| Meetio AB | |
| Meetly | |
| Megasol Technolologies | Uppsala |
| Meitner AB | |
| Melius Pharma AB | |
| Melt&Marble AB | |
| Memention AB | Stockholm |
| Memmo Family AB | |
| Mendi | |
| Mendus AB | |
| Mentice | |
| Mentimeter | Stockholm |
| Mercodia | |
| Merlin Software | Uppsala |
| Merphi AB | |
| Mesenkia Therapeutics AB | |
| Meta Bytes | |
| MetaboGen AB | |
| MetaCurUm Biotech AB | |
| Metafore | |
| Metamatrix | Stockholm |
| Metapic Sweden AB | |
| Metry | |
| Mevia | |
| Mevisio AB | |
| MeWe&You Health AB | |
| Microbas Precision AB | |
| Microbus AB | Kalmar |