| Mauste Holding AB | Hudiksvall | 0 tkr |
| Max Andrup AB | Hudiksvall | 0 tkr |
| Max Hoffbrandt Invest AB | Gävle | 0 tkr |
| MaxMikaelsson AB | Gävle | 0 tkr |
| Max T Holding AB | Gävle | 0 tkr |
| MAY Communications AB | Forsa | 0 tkr |
| MBA Consulting AB | Stockholm | 0 tkr |
| MBJ Invest AB | Gävle | 0 tkr |
| MCGW AB | Gävle | 0 tkr |
| MEAC AB | Valbo | 0 tkr |
| M&E Acar AB | Gävle | 0 tkr |
| Meadowman Consulting AB | Gävle | 0 tkr |
| MEDENS AB | Valbo | 0 tkr |
| Mediakocken i Färila AB | Färila | 0 tkr |
| Medicinsk Konsult Knollenburg AB | Delsbo | 0 tkr |
| Medlemsvagnen AB | Söderhamn | 0 tkr |
| meenin AB | Gävle | 0 tkr |
| Megadodo Publications AB | Hudiksvall | 0 tkr |
| MEJ Entreprenad AB | Gävle | 0 tkr |
| Mekanik och digitalteknik i Hälsingland AB | Arbrå | 0 tkr |
| Mekanotjänst Holding Sverige AB | Järvsö | 0 tkr |
| Meklöf Holding AB | Gävle | 0 tkr |
| M Eklund Entreprenad AB | Gnarp | 0 tkr |
| Melik AB | Gävle | 0 tkr |
| Melius Consulting AB | Storvik | 0 tkr |
| Men visst har vi väl trevligt AB | Gävle | 0 tkr |
| MEOS HOLDING AB | Gävle | 0 tkr |
| Mesken & Emaar Construction AB | Gävle | 0 tkr |
| MESKEN Sverige AB | Gävle | 0 tkr |
| Mesri Konsult AB | Gävle | 0 tkr |
| Metahyd AB | Gävle | 0 tkr |
| MeVision Förvaltning AB | Hudiksvall | 0 tkr |
| Mevlana Livs AB | Gävle | 0 tkr |
| MG Fastfood AB | Bollnäs | 0 tkr |
| MGT Gefle AB | Gävle | 0 tkr |
| MH Fastigheter Hälsingland AB | Bollnäs | 0 tkr |
| MH Förvaltning i Hälsingland AB | Hudiksvall | 0 tkr |
| MHJ Invest AB | Valbo | 0 tkr |
| MH Taxi i Gävle AB | Sandviken | 0 tkr |
| Michael Fahlström IT AB | Edsbyn | 0 tkr |
| Michael Lindberg Holding AB | Edsbyn | 0 tkr |
| Mickelsson Investment AB | Bollnäs | 0 tkr |
| Micke Persson Holding AB | Bollnäs | 0 tkr |
| Micke Svensson Holding AB | Ljusdal | 0 tkr |
| MIDA Gård AB | Åshammar | 0 tkr |
| Mid Group AB | Sandviken | 0 tkr |
| Midya Gross AB | Valbo | 0 tkr |
| MIEB Invest AB | Gävle | 0 tkr |
| Mi-Em AB | Gävle | 0 tkr |
| MIGR AB | Sandviken | 0 tkr |