| Måns Parsjö Floorball Aktiebolag | Uppsala | 0 tkr |
| Marcus Jirdén Holding AB | Umeå | 0 tkr |
| Marcus Oskarsson i Umeå AB | Röbäck | 0 tkr |
| Mariscos Lyx AB | Umeå | 0 tkr |
| Mark 6 Holding AB | Umeå | 0 tkr |
| Markberg Holding AB | Umeå | 0 tkr |
| Markiser i Umeå AB | Umeå | 0 tkr |
| Marktjänst i Västerbotten Holding Aktiebolag | Umeå | 0 tkr |
| Markus E Invest AB | Sävar | 0 tkr |
| Markus Sandström Invest AB | Umeå | 0 tkr |
| Markus Westberg Holding AB | Umeå | 0 tkr |
| Marrikk Auto Teknik AB | Sävar | 0 tkr |
| Martin Hanberger AB | Umeå | 0 tkr |
| Martin Morin AB | Umeå | 0 tkr |
| Maskinuthyrning i Norrland AB | Umeå | 0 tkr |
| Matservering Najeb AB | Umeå | 0 tkr |
| Mats Eurén AB | Umeå | 0 tkr |
| Mats Henriks Aktiebolag | Umeå | 0 tkr |
| Mats Olsson TEG Consulting AB | Umeå | 0 tkr |
| Mattias Eklund AB | Falun | 0 tkr |
| Mattias Jonsson Umeå AB | Umeå | 0 tkr |
| Mattias L Holding AB | Umeå | 0 tkr |
| Mattias Lövström AB | Umeå | 0 tkr |
| Mattias Matsson Invest AB | Umeå | 0 tkr |
| M. Bernhardsson i Umeå AB | Umeå | 0 tkr |
| MBZ Invest AB | Umeå | 0 tkr |
| MCA HOLDING AB | Umeå | 0 tkr |
| M Consulting Umeå AB | Umeå | 0 tkr |
| MD Biomedical AB | Uppsala | 0 tkr |
| Medicta AB | Lövånger | 0 tkr |
| Mediehuset i Umeå Aktiebolag | Umeå | 0 tkr |
| Meditron Hotellinvest AB | Umeå | 0 tkr |
| Medro AB | Umeå | 0 tkr |
| Medtech innovation i Umeå AB | Umeå | 0 tkr |
| Medwill Konsult AB | Umeå | 0 tkr |
| Meendo AB | Umeå | 0 tkr |
| M.E.Eriksson i Umeå AB | Umeå | 0 tkr |
| Megazone i Umeå AB | Umeå | 0 tkr |
| Mekka Holding i Umeå AB | Stockholm | 0 tkr |
| Mela Holding i Umeå AB | Umeå | 0 tkr |
| Melonia Invest AB | Sävar | 0 tkr |
| Mendit i Umeå AB | Umeå | 0 tkr |
| MerLiv i Norr AB | Holmsund | 0 tkr |
| MetaCurUm Biotech AB | Umeå | 0 tkr |
| Metropolis Digital AB | Skellefteå | 0 tkr |
| MF Media AB | Umeå | 0 tkr |
| MG Larson AB | Röbäck | 0 tkr |
| MGWP Invest AB | Umeå | 0 tkr |
| M Holmlund Holding AB | Umeå | 0 tkr |
| MHP 2 i Umeå AB | Umeå | 0 tkr |