| MonBos Förvaltning AB | Alfta | 0 tkr |
| MonBos Holding AB | Alfta | 0 tkr |
| Money Talks AB | Hägersten | 0 tkr |
| Mongoliaimport AB | Gävle | 0 tkr |
| Monitor ERP Group AB | Hudiksvall | 0 tkr |
| Monkey Business AB | Göteborg | 0 tkr |
| Mont Blanc Holding AB | Uppsala | 0 tkr |
| Montinext AB | Valbo | 0 tkr |
| Moon Flame Games AB | Ramsjö | 0 tkr |
| MOO Service i Gävle AB | Gävle | 0 tkr |
| Mopevik AB | Viksjöfors | 0 tkr |
| Morendo Fastighets-och Förvaltnings Aktiebolag | Söderhamn | 0 tkr |
| MorFast AB | Kilafors | 0 tkr |
| Morgan Jonsson Invest AB | Ljusdal | 0 tkr |
| Morianen Invest Aktiebolag | Gävle | 0 tkr |
| Morianen Kapital AB | Gävle | 0 tkr |
| Morianen Music AB | Gävle | 0 tkr |
| MoRo Invest AB | Alfta | 0 tkr |
| Mörtnorsvallen Invest AB | Hudiksvall | 0 tkr |
| Mosaiken Holding AB | Hedesunda | 0 tkr |
| Mottelou AB | Sandviken | 0 tkr |
| Mowesoft AB | Hudiksvall | 0 tkr |
| MPersson AB | Hudiksvall | 0 tkr |
| MPL Plåt i Gävle AB | Gävle | 0 tkr |
| MPNC Holding AB | Gävle | 0 tkr |
| MP Skogsentreprenad AB | Enånger | 0 tkr |
| MR. Invest AB | Tallåsen | 0 tkr |
| MrK Konsult AB | Söderhamn | 0 tkr |
| MSU Konsult AB | Gävle | 0 tkr |
| MTM Ljusne AB | Ljusne | 0 tkr |
| MTN Invest AB | Ljusne | 0 tkr |
| MT Sjökonsult AB | Stockholm | 0 tkr |
| MU 1 Invest AB | Iggesund | 0 tkr |
| MultiNova AB | Gävle | 0 tkr |
| Munkamyran Holding AB | Alfta | 0 tkr |
| Murars Holding i Vallsta AB | Vallsta | 0 tkr |
| Murtek Sverige Holding AB | Gävle | 0 tkr |
| MVHB AB | Delsbo | 0 tkr |
| MW65 AB | Söderhamn | 0 tkr |
| MWJS Förvaltning AB | Gävle | 0 tkr |
| MWS Ledarskap och coaching AB | Gävle | 0 tkr |
| Mybrickwork AB | Sundsvall | 0 tkr |
| Myrra vård AB | Härnösand | 0 tkr |
| My Vintage Sweden AB | Uppsala | 0 tkr |
| Nadine Holding AB | Forsa | 0 tkr |
| Nakaia Holding AB | Gävle | 0 tkr |
| NåN Synaps AB | Gävle | 0 tkr |
| Näringen Invest AB | Gävle | 0 tkr |
| Näringens Lokaluthyrning Gävle Aktiebolag | Gävle | 0 tkr |
| Näringe Verktyg Aktiebolag | Gävle | 0 tkr |