| Matrisen Aktiebolag | Vikmanshyttan | 0 tkr |
| Matsbyns Mek Aktiebolag | Idkerberget | 0 tkr |
| Mats Erik Bäckström Förvaltning AB | Falun | 0 tkr |
| Mats Eriksson Förvaltning AB | Borlänge | 0 tkr |
| Mats Magnusson Invest AB | Ludvika | 0 tkr |
| Mattias Augustsson Holding AB | Falun | 0 tkr |
| Mattias Lindberg AB | Söderbärke | 0 tkr |
| Mattias Morenius Consulting i Sundborn AB | Sundborn | 0 tkr |
| Mattias Richert Invest AB | Sälen | 0 tkr |
| Matts Lindén Aktiebolag | Nås | 0 tkr |
| Mavitiro AB | Falun | 0 tkr |
| MAXELLA AB | Insjön | 0 tkr |
| Maxhampus AB | Hedemora | 0 tkr |
| MB Käk Holding AB | Mora | 0 tkr |
| MBYQ AB | Avesta | 0 tkr |
| MCH Invest AB | Mora | 0 tkr |
| MD I MORA Aktiebolag | Alunda | 0 tkr |
| Mecastell Stefan Ericson AB | Falun | 0 tkr |
| Medhunt Consulting AB | Mora | 0 tkr |
| Medicallt AB | Fors | 0 tkr |
| Medinca AB | Mora | 0 tkr |
| MeetWork AB | Falun | 0 tkr |
| ME förvaltningsbolag i Borlänge AB | Borlänge | 0 tkr |
| Megadyptes AB | Falun | 0 tkr |
| Mega-Stocken AB | Stockholm | 0 tkr |
| Mehdi Molana Förvaltningsbolag AB | Falun | 0 tkr |
| Mekanikerpoolen i Sverige AB | Borlänge | 0 tkr |
| Mekanikservice i Borlänge AB | Borlänge | 0 tkr |
| Melker Olsson AB | Falun | 0 tkr |
| Mellstrand Holding AB | Falun | 0 tkr |
| MeMa Borlänge AB | Borlänge | 0 tkr |
| Mentera AB | Falun | 0 tkr |
| Mertis Scandinavia AB | Grängesberg | 0 tkr |
| Metoma Försäljning AB | Borlänge | 0 tkr |
| Mevian Holding AB | Sälen | 0 tkr |
| Mexicana AB | Falun | 0 tkr |
| Meymando AB | Borlänge | 0 tkr |
| Mezgin Fastighets AB | Borlänge | 0 tkr |
| MG Capital 1050 AB | Sollentuna | 0 tkr |
| M & G Lagerström AB | Särna | 0 tkr |
| MGT Holding AB | Avesta | 0 tkr |
| M. Hjort AB | Orsa | 0 tkr |
| M Holst Förvaltning AB | Borlänge | 0 tkr |
| MHS Innovations AB | Falun | 0 tkr |
| Miagu Mat AB | Borlänge | 0 tkr |
| Mibe Distribution i Gävleborg AB | Borlänge | 0 tkr |
| Micbet Holding AB | Borlänge | 0 tkr |
| Michael Arvidsson Holding AB | Borlänge | 0 tkr |
| Michael Johannesson AB | Borlänge | 0 tkr |
| Micke Johansson TeleCom AB | Ludvika | 0 tkr |