| Lysegårdens Montage AB | Romelanda | 0 tkr |
| Lyse Hav AB | Kungälv | 0 tkr |
| Mabio AB | Kareby | 0 tkr |
| MAEQ Holding AB | Kungälv | 0 tkr |
| MAEQ Ventures AB | Kungälv | 0 tkr |
| Magnus Björk Holding AB | Kärna | 0 tkr |
| Magnus Lagersten AB | Kungälv | 0 tkr |
| Magnus Siverbrant Consulting AB | Ytterby | 0 tkr |
| Magora AB | Kareby | 0 tkr |
| Majnabbe Group AB | Kungälv | 0 tkr |
| MAKLI Holding AB | Kungälv | 0 tkr |
| MA Management AB | Kode | 0 tkr |
| Manics Holding AB | Kungälv | 0 tkr |
| Månljuset Holding AB | Lycke | 0 tkr |
| Marcel Invest AB | Kungälv | 0 tkr |
| Marcus HMA AB | Kungälv | 0 tkr |
| Mariebergs Gård AB | Kungälv | 0 tkr |
| Maritimas AB | Kärna | 0 tkr |
| Markus Johansson Förvaltning AB | Kungälv | 0 tkr |
| Marstrand Invest AB | Stockholm | 0 tkr |
| Marstrand Seafood AB | Hovås | 0 tkr |
| Marstrand Yachts Holding AB | Västra Frölunda | 0 tkr |
| Martins och Kerstins Byggprojektledning AB | Romelanda | 0 tkr |
| MaskinExpressen Transport GBG AB | Harestad | 0 tkr |
| Massa Carrara 313 Sten AB | Ytterby | 0 tkr |
| Mathias Hälsa & Prestation AB | Göteborg | 0 tkr |
| Mats Well Holding AB | Harestad | 0 tkr |
| Matte Investerar AB | Ytterby | 0 tkr |
| Mattias Svensson Consulting AB | Romelanda | 0 tkr |
| Matz Flodin Kapitalförvaltning AB | Kungälv | 0 tkr |
| Mavik AB | Kungälv | 0 tkr |
| MAW01 Holding AB | Göteborg | 0 tkr |
| Max Båthen AB | Lycke | 0 tkr |
| MBS Utveckling AB | Kareby | 0 tkr |
| MDM Group AB | Kareby | 0 tkr |
| MDOmat AB | Kungälv | 0 tkr |
| Media & App Production West AB | Göteborg | 0 tkr |
| M-EK Holding AB | Kungälv | 0 tkr |
| Melges AB | Ytterby | 0 tkr |
| MELK Förvaltning AB | Kärna | 0 tkr |
| MEP Invest AB | Hålta | 0 tkr |
| Mereri AB | Kungälv | 0 tkr |
| MG Andersson Holding AB | Lycke | 0 tkr |
| M.Holmströms Fastigheter AB | Ytterby | 0 tkr |
| MiCre AB | Kungälv | 0 tkr |
| Mikael Borbély Holding AB | Lycke | 0 tkr |
| Mikael Gillholm Holding AB | Harestad | 0 tkr |
| Mikaels Fritidsförvaltning AB | Kungälv | 0 tkr |
| MiSECO AB | Kungälv | 0 tkr |
| Misteröd 1:2 AB | Kungälv | 0 tkr |