| Makenzius No 1 AB | Solna | 0 tkr |
| Malava AB | Solna | 0 tkr |
| Maliberta AB | Uppsala | 0 tkr |
| Malin Ohlson Invest AB | Solna | 0 tkr |
| Mallis Real Estate and interior Design AB | Saltsjöbaden | 0 tkr |
| Malteplex AB | Stockholm | 0 tkr |
| Malver's barber AB | Täby | 0 tkr |
| Mamahuhu Holding AB | Solna | 0 tkr |
| Mana Förvaltning AB | Solna | 0 tkr |
| Mandapt 1 AB | Solna | 0 tkr |
| Mandapt 2 AB | Solna | 0 tkr |
| Maråcal AB | Solna | 0 tkr |
| Marcus Grimfors investering AB | Solna | 0 tkr |
| Marcus Kamlind AB | Solna | 0 tkr |
| Mareus Innovation Management AB | Stockholm | 0 tkr |
| Maria Äng AB | Solna | 0 tkr |
| Maria Hambraeus Aktiebolag | Solna | 0 tkr |
| Maria S7 AB | Järfälla | 0 tkr |
| Marias Hus AB | Solna | 0 tkr |
| MarieTine Produktion AB | Solna | 0 tkr |
| Marina Drozdova Förvaltning AB | Täby | 0 tkr |
| Market Control Management Sweden AB | Sollentuna | 0 tkr |
| Market Leader Sweden AB | Solna | 0 tkr |
| Markus Sjöberg Holding AB | Solna | 0 tkr |
| Marla Holding AB | Solna | 0 tkr |
| Marmorinnan Dekorationsmålare AB | Solna | 0 tkr |
| Marouf Enterprise AB | Solna | 0 tkr |
| Martell Holding AB | Stockholm | 0 tkr |
| Martin Molin Invest AB | Sundbyberg | 0 tkr |
| Match Point AB | Solna | 0 tkr |
| Mathiasson & Hansson AB | Solna | 0 tkr |
| Matrix Muscle Support AB | Solna | 0 tkr |
| Mats Carlson Konsult AB | Ljusterö | 0 tkr |
| Mats Riesel Bil & Maskin AB | Åkersberga | 0 tkr |
| Mats Virtual Holding AB | Solna | 0 tkr |
| Mattias Kjörk Holding AB | Solna | 0 tkr |
| Matzacke AB | Bromma | 0 tkr |
| Maud Zeidlitz Holding AB | Solna | 0 tkr |
| Maug Invest AB | Stockholm | 0 tkr |
| MAX Antiques & Collectibles AB | Riala | 0 tkr |
| Maximustony Holding AB | Solna | 0 tkr |
| MB74 Holding AB | Djursholm | 0 tkr |
| MB75 AB | Solna | 0 tkr |
| M Bjuhr AB | Solna | 0 tkr |
| MBK Advisory AB | Solna | 0 tkr |
| MCL Photography AB | Järfälla | 0 tkr |
| MCL Redovisning AB | Solna | 0 tkr |
| MD Investment Group AB | Solna | 0 tkr |
| MDK Holdings AB | Solna | 0 tkr |
| Mechanism Design Sweden AB | Solna | 0 tkr |