| Mannerheim Lindvall holding AB | Söderköping | 0 tkr |
| Månssons Gräv & Mark AB | Svärtinge | 0 tkr |
| Marbymarken 1:5 AB | Norrköping | 0 tkr |
| Marbymarken AB | Norrköping | 0 tkr |
| Marbymarken Holding AB | Norrköping | 0 tkr |
| Mård Lind Holding AB | Norrköping | 0 tkr |
| Mariam Gewriye AB | Norrköping | 0 tkr |
| Maria Olofsson Kultur & Nöje AB | Vikbolandet | 0 tkr |
| Marika care AB | Norrköping | 0 tkr |
| Marinastaden Energy AB | Norrköping | 0 tkr |
| Markstedt Kommunikation Aktiebolag | Norrköping | 0 tkr |
| Markus Sven Jörgen Invest AB | Norrköping | 0 tkr |
| Markus Westerberg Holding AB | Söderköping | 0 tkr |
| Martin Hollingworth AB | Kolmården | 0 tkr |
| Marviken Development AB | Stockholm | 0 tkr |
| Marviken Värme & Pump Service AB | Vikbolandet | 0 tkr |
| Marvin & Grace AB | Norrköping | 0 tkr |
| MASATA AB | Kivik | 0 tkr |
| Massi Invest AB | Norrköping | 0 tkr |
| Massvis AB | Linghem | 0 tkr |
| Mat är livet Norrköping Aktiebolag | Norrköping | 0 tkr |
| MatMag Holding AB | Vallda | 0 tkr |
| Mats Björkman Eldh Holding AB | Kolmården | 0 tkr |
| Mats Grünerwald AB | Åby | 0 tkr |
| Mats Gunnar AB | Kolmården | 0 tkr |
| Mattias Isebäck Förvaltnings AB | Norrköping | 0 tkr |
| Mattias Klein AB | Norrköping | 0 tkr |
| Mattias Vikholm Holding i Östergötland AB | Linghem | 0 tkr |
| MAVIME AB | Norrköping | 0 tkr |
| MA-WA Elservice AB | Norrköping | 0 tkr |
| Maya Transport AB | Angered | 0 tkr |
| May Lami AB | Eskilstuna | 0 tkr |
| Mayrhof Holding AB | Norrköping | 0 tkr |
| Maysoft AB | Norrköping | 0 tkr |
| MBML Invest AB | Norrköping | 0 tkr |
| MBQ Holding AB | Norrköping | 0 tkr |
| MC CAFE Aktiebolag | Norrköping | 0 tkr |
| MCLV Holding AB | Norrköping | 0 tkr |
| MCP Förvaltning AB | Norrköping | 0 tkr |
| MD6 Sweden AB | Norrköping | 0 tkr |
| Mecide Group AB | Norrköping | 0 tkr |
| Mecide & Nissan Holding AB | Norrköping | 0 tkr |
| Mecide Samo Bröderna AB | Norrköping | 0 tkr |
| Medicarol AB | Norrköping | 0 tkr |
| MEDIFORS AB | Norrköping | 0 tkr |
| Medinvest Nord AB | Norrköping | 0 tkr |
| MEGA Energy Group Sweden AB | Norrköping | 0 tkr |
| Megakoll AB | Gusum | 0 tkr |
| MEJA Holding AB | Söderköping | 0 tkr |
| Melby Hills AB | Linköping | 0 tkr |