| Marcus Boije Holding AB | Trosa | 0 tkr |
| Marcus Jirdén Holding AB | Umeå | 0 tkr |
| Marcus Oskarsson i Umeå AB | Röbäck | 0 tkr |
| Marie Blomberg Ledarkonsult AB | Lycksele | 0 tkr |
| Marie & J-E Karlsson AB | Bygdsiljum | 0 tkr |
| Mario Antonios AB | Skellefteå | 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 |
| Marklund Bil AB | Skellefteå | 0 tkr |
| Markmin AB | Skellefteå | 0 tkr |
| Marktjänst i Västerbotten Holding Aktiebolag | Umeå | 0 tkr |
| Markus E Invest AB | Sävar | 0 tkr |
| Markus Grönlund AB | Ursviken | 0 tkr |
| Markus Rönnholm Invest AB | Storuman | 0 tkr |
| Markus Sandström Invest AB | Umeå | 0 tkr |
| Markus Westberg Holding AB | Umeå | 0 tkr |
| Marlev Förvaltning AB | Skellefteå | 0 tkr |
| MARO Sverige AB | Nordmaling | 0 tkr |
| MARREWIK AB | Skellefteå | 0 tkr |
| Marrikk Auto Teknik AB | Sävar | 0 tkr |
| Märta Haglind Holding AB | Kåge | 0 tkr |
| Martin Hanberger AB | Umeå | 0 tkr |
| Martin Morin AB | Umeå | 0 tkr |
| Martinson Group Aktiebolag | Umeå | 0 tkr |
| Martinsons Trä AB | Bygdsiljum | 0 tkr |
| Maskintransporter i Byske AB | Byske | 0 tkr |
| Maskinuthyrning i Norrland AB | Umeå | 0 tkr |
| MA Svetsprodukter i Skellefteå Aktiebolag | Skellefteå | 0 tkr |
| Matias Karlsson Trading AB | Skellefteå | 0 tkr |
| MATOX Fastigheter AB | Umeå | 0 tkr |
| Mats Brännström Förvaltning AB | Skellefteå | 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 |
| Matte Konsult AB | Kåge | 0 tkr |
| Måttet Rågat AB | Skellefteå | 0 tkr |
| Mattias 2001 AB | Byske | 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 |
| Mattias Näslund Holding AB | Luleå | 0 tkr |
| Matts Hägglund Konsult AB | Flarken | 0 tkr |
| Maxiver AB | Skellefteå | 0 tkr |
| M. Bernhardsson i Umeå AB | Umeå | 0 tkr |
| Mbex AB | Vilhelmina | 0 tkr |