| M4T Huddinge AB | Hjo | 0 tkr |
| Macfast Holding AB | Huddinge | 0 tkr |
| Madab Lss & Assistans AB | Johanneshov | 0 tkr |
| Made Ezy AB | Trångsund | 0 tkr |
| Magistral Holding AB | Huddinge | 0 tkr |
| MagNil Consulting AB | Segeltorp | 0 tkr |
| Magnus Granath Management AB | Segeltorp | 0 tkr |
| Magnus Karlsson Fastighetsförmedling AB | Huddinge | 0 tkr |
| MA Holding i Stockholm AB | Stockholm | 0 tkr |
| Majestic Event & Konsult AB | Hägersten | 0 tkr |
| Majkfredbygg och renovering AB | Skogås | 0 tkr |
| Mälardalens Rivningsteam AB | Bålsta | 0 tkr |
| Mälbypark AB | Huddinge | 0 tkr |
| M and M Management AB | Huddinge | 0 tkr |
| Mandys Corner AB | Huddinge | 0 tkr |
| Månen bil AB | Tumba | 0 tkr |
| Manergize AB | Huddinge | 0 tkr |
| Maniveto i Stockholm AB | Huddinge | 0 tkr |
| Mannerstål Consulting AB | Huddinge | 0 tkr |
| Människa-Teknik-Organisationspsykologi Lena Kecklund AB | Huddinge | 0 tkr |
| Männistö Holding AB | Norsborg | 0 tkr |
| Maponeli Holding AB | Segeltorp | 0 tkr |
| Maria Andreassen Ekonomikonsult AB | Skogås | 0 tkr |
| Marie Ekström Konsult AB | Stockholm | 0 tkr |
| MariSiljeströmer AB | Tungelsta | 0 tkr |
| Markarian Invest AB | Segeltorp | 0 tkr |
| Mark Jihan B&B AB | Huddinge | 0 tkr |
| Marko Mijailovic Holding AB | Huddinge | 0 tkr |
| Marmeys Consulting AB | Trångsund | 0 tkr |
| Martin Lundells Konsult & Service AB | Huddinge | 0 tkr |
| MARWR AB | Huddinge | 0 tkr |
| Mary Bygglösningar AB | Huddinge | 0 tkr |
| Maryzpurt AB | Huddinge | 0 tkr |
| Match4People AB | Huddinge | 0 tkr |
| Mathias Olsson IT AB | Huddinge | 0 tkr |
| Matorex AB | Vällingby | 0 tkr |
| Mat på Linggatan AB | Huddinge | 0 tkr |
| Mats Lindskog Invest AB | Huddinge | 0 tkr |
| Mats Sterner AB | Huddinge | 0 tkr |
| Mats Sterner Invest AB | Huddinge | 0 tkr |
| Mattias Karlsson Consulting AB | Huddinge | 0 tkr |
| MB Capital Invest AB | Huddinge | 0 tkr |
| MEC Propertyinvest AB | Huddinge | 0 tkr |
| Medico Viajero AB | Skarpnäck | 0 tkr |
| Medivir Personal AB | Huddinge | 0 tkr |
| Mednav AB | Segeltorp | 0 tkr |
| Medpiotr plus AB | Vårby | 0 tkr |
| Med-Rad Global Bemanning AB | Segeltorp | 0 tkr |
| Medveten Riktning AB | Huddinge | 0 tkr |
| MeErcat Holding AB | Huddinge | 0 tkr |