| Mantax Aktiebolag | Nacka | 0 tkr |
| Manumit AB | Saltsjö-Boo | 0 tkr |
| Mapego Invest AB | Täby | 0 tkr |
| Marcus Holmström Konsulting AB | Södertälje | 0 tkr |
| Marcus Lindqvist Hasseludden Invest AB | Saltsjö-Boo | 0 tkr |
| Maree fastighetsinvest 1 AB | Stockholm | 0 tkr |
| Maree Tarnhelm Sjölanda Lakeview Holding AB | Stockholm | 0 tkr |
| Margaret Invest AB | Stockholm | 0 tkr |
| MariaAndreMazy AB | Saltsjö-Duvnäs | 0 tkr |
| Marina Båtlyftar Sverige AB | Saltsjöbaden | 0 tkr |
| MarinaBo AB | Ystad | 0 tkr |
| Marinberget AB | Saltsjöbaden | 0 tkr |
| Markås konsult AB | Saltsjö-Boo | 0 tkr |
| MarkFast i Nacka Strand AB | Nacka Strand | 0 tkr |
| Martin Brage Consulting AB | Älta | 0 tkr |
| Martin Ericsson Förvaltning AB | Stockholm | 0 tkr |
| Martini Invest Aktiebolag | Saltsjö-Boo | 0 tkr |
| Martin Sahlberg Förvaltningsbolag AB | Stockholm | 0 tkr |
| Martio Revision AB | Nacka | 0 tkr |
| Mason Lee AB | Nacka | 0 tkr |
| Matheson Kastrup Holding AB | Ekerö | 0 tkr |
| Mats Persson Energi Aktiebolag | Saltsjö-Boo | 0 tkr |
| Mats Wannfors Holding AB | Nacka | 0 tkr |
| Mattes Låda AB | Älta | 0 tkr |
| Mattfolk Holding AB | Saltsjö-Boo | 0 tkr |
| Maurice AB | Saltsjöbaden | 0 tkr |
| Mauro Gozzo Consulting AB | Saltsjö-Boo | 0 tkr |
| m.a Vinterbrinken Holding AB | Saltsjöbaden | 0 tkr |
| MAWI Consuming Life AB | Älta | 0 tkr |
| MAWI Holding AB | Älta | 0 tkr |
| Maxbolaget AB | Saltsjö-Boo | 0 tkr |
| Maxglan AB | Saltsjö-Boo | 0 tkr |
| Maximilian Holding AB | Saltsjöbaden | 0 tkr |
| Maxium AB | Stockholm | 0 tkr |
| Maxpack AB | Årsta | 0 tkr |
| Maxus Aktiebolag | Stockholm | 0 tkr |
| Mazur Innovation AB | Saltsjö-Boo | 0 tkr |
| MB Läkarekonsult AB | Nacka | 0 tkr |
| MBL Invest AB | Åkersberga | 0 tkr |
| M.C Centri AB | Saltsjöbaden | 0 tkr |
| MCS Invest AB | Nacka | 0 tkr |
| Mecila AB | Saltsjö-Boo | 0 tkr |
| mecreatesit AB | Stockholm | 0 tkr |
| MEDAK Konsult AB | Nacka | 0 tkr |
| Medikonsult AEH AB | Nacka | 0 tkr |
| Meea AB | Nacka | 0 tkr |
| Mega Match AB | Älta | 0 tkr |
| Meindl Bygg Aktiebolag | Jukkasjärvi | 0 tkr |
| Meiton Investment AB | Saltsjöbaden | 0 tkr |
| Melke Holding AB | Nacka | 0 tkr |