| Mecide Samo Bröderna AB | Norrköping | 0 tkr |
| Mediaempire Holding AB | Linköping | 0 tkr |
| Medicarol AB | Norrköping | 0 tkr |
| MEDIFORS AB | Norrköping | 0 tkr |
| Medinvest Nord AB | Norrköping | 0 tkr |
| Medius Global AB | Linköping | 0 tkr |
| Medjack AB | Linköping | 0 tkr |
| MEF Holding i Linköping AB | Linköping | 0 tkr |
| MEGA Energy Group Sweden AB | Norrköping | 0 tkr |
| Megakoll AB | Gusum | 0 tkr |
| Megalodon AB | Motala | 0 tkr |
| Megalodon Försäkring & Personalstrategi Aktiebolag | Norrköping | 0 tkr |
| Meharis Konsulting AB | Linköping | 0 tkr |
| Meimirus AB | Norrköping | 0 tkr |
| MEJA Holding AB | Söderköping | 0 tkr |
| MEJA Invest AB | Söderköping | 0 tkr |
| Melby Hills AB | Linköping | 0 tkr |
| Melby Terrass AB | Linköping | 0 tkr |
| Melefors Holding AB | Linköping | 0 tkr |
| Melkes Krog AB | Valdemarsvik | 0 tkr |
| Mellan Promenaderna AB | Björkvik | 0 tkr |
| Melskog Aktiebolag | Linköping | 0 tkr |
| Melstad Förvaltning AB | Linköping | 0 tkr |
| Melvin & Liam Invest AB | Ljungsbro | 0 tkr |
| MEMEQ AB | Linköping | 0 tkr |
| Mentorify AB | Linköping | 0 tkr |
| Mercurio x Minerva AB | Linköping | 0 tkr |
| M Ergul AB | Norrköping | 0 tkr |
| Merilind Medical AB | Linköping | 0 tkr |
| Merited AB | Norrköping | 0 tkr |
| Merulis AB | Linköping | 0 tkr |
| Merx Svenska Holding AB | Söderköping | 0 tkr |
| Messo Sales AB | Norrköping | 0 tkr |
| MFD Technology Holding AB | Åtvidaberg | 0 tkr |
| M Förvaltning AB | Åby | 0 tkr |
| M Fredriksson Lif AB | Vadstena | 0 tkr |
| M Frisk AB | Mjölby | 0 tkr |
| M.F. SJÖSTUGAN AB | Katrineholm | 0 tkr |
| M&F Slotte Group AB | Åby | 0 tkr |
| M/G Allservice i Norrköping AB | Norrköping | 0 tkr |
| MGBE Group AB | Norrköping | 0 tkr |
| MG Holding Linköping AB | Linköping | 0 tkr |
| MGL Read & Speech AB | Mjölby | 0 tkr |
| MGP Holding AB | Linköping | 0 tkr |
| MH Bygg o Fastighetsservice AB | Motala | 0 tkr |
| M Helmfrid Management AB | Linköping | 0 tkr |
| MH Holding Norrköping AB | Norrköping | 0 tkr |
| MH Köhler Invest AB | Valdemarsvik | 0 tkr |
| Mia Götesdotter Consulting AB | Åtvidaberg | 0 tkr |
| MIA Holding AB | Linköping | 0 tkr |