| Lyon AM AB | Älvsjö | 0 tkr |
| LZY Consulting AB | Nacka | 0 tkr |
| M26 Fastigheter AB | Saltsjö-Boo | 0 tkr |
| M2 Mekaniska Verkstad AB | Saltsjö-Boo | 0 tkr |
| m85 Invest AB | Saltsjö-Boo | 0 tkr |
| MAAG Intressenter Stockholm AB | Tyresö | 0 tkr |
| Mabasjö AB | Saltsjö-Boo | 0 tkr |
| Mabi Consulting Aktiebolag | Saltsjö-Boo | 0 tkr |
| MACCON AB | Märsta | 0 tkr |
| Mackintosh Consulting AB | Nacka | 0 tkr |
| Madarur Ekonomi AB | Solna | 0 tkr |
| Madjidi Holding AB | Nacka | 0 tkr |
| Madsen Sport AB | Djurhamn | 0 tkr |
| Magbjo Advokat AB | Saltsjöbaden | 0 tkr |
| Maggzz AB | Älta | 0 tkr |
| Maghan Design AB | Saltsjö-Boo | 0 tkr |
| MagIQ Consulting AB | Ystad | 0 tkr |
| Magne Fastigheter AB | Sollentuna | 0 tkr |
| Magne Invest AB | Sollentuna | 0 tkr |
| Magne Näringsfastigheter AB | Saltsjöbaden | 0 tkr |
| MagnificentH AB | Nacka | 0 tkr |
| Maja Derma AB | Saltsjö-Boo | 0 tkr |
| Majkowitz Consulting AB | Saltsjöbaden | 0 tkr |
| Majola Holding AB | Nacka | 0 tkr |
| Majorsvägen Invest AB | Saltsjöbaden | 0 tkr |
| Makani Media AB | Saltsjö-Boo | 0 tkr |
| Makeitmove AB | Saltsjö-Boo | 0 tkr |
| Mälar och Saltsjö Gräv AB | Saltsjö-Boo | 0 tkr |
| Malax AB | Lidköping | 0 tkr |
| Malid Group AB | Nacka | 0 tkr |
| Malin Growth AB | Saltsjöbaden | 0 tkr |
| Malin Widén Consulting AB | Nacka | 0 tkr |
| Malmgården AB | Saltsjö-Boo | 0 tkr |
| Malmström Capital AB | Nacka | 0 tkr |
| Maltholmen Invest AB | Saltsjö-Duvnäs | 0 tkr |
| Maltur AB | Nacka | 0 tkr |
| Maluto AB | Nacka | 0 tkr |
| MA&MA Consulting AB | Stockholm | 0 tkr |
| Mama Rozta AB | Nacka | 0 tkr |
| Management Sports Consulting Sweden AB | Färjestaden | 0 tkr |
| Mancuro Consulting AB | Stockholm | 0 tkr |
| Mandel Fastigheter Stockholm AB | Nacka Strand | 0 tkr |
| Mandel Förvaltnings AB | Nacka Strand | 0 tkr |
| Mandel Kapitalförvaltning AB | Nacka Strand | 0 tkr |
| Mandevo Affärsledning AB | Älta | 0 tkr |
| Mandy Holding AB | Saltsjö-Boo | 0 tkr |
| Manfred Invest AB | Åre | 0 tkr |
| MangeEkman AB | Nacka | 0 tkr |
| Manistal Aktiebolag | Älta | 0 tkr |
| Mannberg Management AB | Älta | 0 tkr |