| Marpa Invest AB | Linköping | 0 tkr |
| Mårten Berbres AB | Linköping | 0 tkr |
| Martin Blomberg Utveckling AB | Linköping | 0 tkr |
| Martin Eriksson Läkarkonsult AB | Linköping | 0 tkr |
| Martin Rosén AB | Linköping | 0 tkr |
| M-A Seradji AB | Linköping | 0 tkr |
| Maskinia Group AB | Linköping | 0 tkr |
| Maskinia Holding AB | Linköping | 0 tkr |
| MasterSoundProduction AB | Linköping | 0 tkr |
| Masugnen i Linköping Aktiebolag | Linköping | 0 tkr |
| Mativate konsult AB | Borensberg | 0 tkr |
| MatjoSoft AB | Vikingstad | 0 tkr |
| Mat & Rörelse i Linköping Aktiebolag | Linköping | 0 tkr |
| Mats Lind Kranbilstransporter AB | Linköping | 0 tkr |
| Mats Lönn Holding AB | Linghem | 0 tkr |
| Mattias Wulcan Invest AB | Linköping | 0 tkr |
| Maud LB Holding AB | Vikingstad | 0 tkr |
| Mauritz & Bros AB | Nykil | 0 tkr |
| Max Halldén Holding AB | Linköping | 0 tkr |
| Max Hansson AB | Linköping | 0 tkr |
| Maxitech Östergötland AB | Örebro | 0 tkr |
| Mazetto AB | Linköping | 0 tkr |
| Mboma Konsult AB | Linköping | 0 tkr |
| MB-travel AB | Linköping | 0 tkr |
| MDC Holding AB | Vikingstad | 0 tkr |
| MD Cleantech AB | Linköping | 0 tkr |
| MDL AB | Sturefors | 0 tkr |
| Mediaempire Holding AB | Linköping | 0 tkr |
| Medius Global AB | Linköping | 0 tkr |
| Medjack AB | Linköping | 0 tkr |
| MEF Holding i Linköping AB | Linköping | 0 tkr |
| Meharis Konsulting AB | Linköping | 0 tkr |
| Melby Terrass AB | Linköping | 0 tkr |
| Melefors Holding AB | 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 |
| Merilind Medical AB | Linköping | 0 tkr |
| Merulis AB | Linköping | 0 tkr |
| MFD Technology Holding AB | Åtvidaberg | 0 tkr |
| MG Holding Linköping AB | Linköping | 0 tkr |
| MGP Holding AB | Linköping | 0 tkr |
| M Helmfrid Management AB | Linköping | 0 tkr |
| MIA Holding AB | Linköping | 0 tkr |
| Mia Langborg Ziherl AB | Sturefors | 0 tkr |
| Micael Gustavsson Förvaltning i Linköping AB | Linköping | 0 tkr |
| Michael Porath Projekt & Miljö AB | Linköping | 0 tkr |
| MI Connect AB | Täby | 0 tkr |