| Magnusson & Söners Åkeri AB | Kungsbacka | 0 tkr |
| Magnus Ullerholt AB | Kungsbacka | 0 tkr |
| MÅ Group AB | Frillesås | 0 tkr |
| Majoro Holding AB | Kungsbacka | 0 tkr |
| Majqvist Holding AB | Åsa | 0 tkr |
| Makinila AB | Onsala | 0 tkr |
| Maleviken Invest AB | Kullavik | 0 tkr |
| Malevik Häst & Hyr AB | Kullavik | 0 tkr |
| Malevik Öfvre AB | Kullavik | 0 tkr |
| MaLill AB | Onsala | 0 tkr |
| Malin Henriksson läkartjänster AB | Onsala | 0 tkr |
| Malin Rondahl AB | Kungsbacka | 0 tkr |
| Maliyah AB | Kungsbacka | 0 tkr |
| Mallcorene 5 AB | Kullavik | 0 tkr |
| Malö Consulting AB | Onsala | 0 tkr |
| Managing Digital Europe AB | Nacka | 0 tkr |
| Maneo AB | Frillesås | 0 tkr |
| Manganas & Co. AB | Kullavik | 0 tkr |
| Maniette Consulting AB | Vallda | 0 tkr |
| Maras Group AB | Vallda | 0 tkr |
| Maras Invest AB | Vallda | 0 tkr |
| Marcus Lagerstedt Venture AB | Åsa | 0 tkr |
| Margareta Christina Persson AB | Kungsbacka | 0 tkr |
| Maria af Petersens Aktiebolag | Vallda | 0 tkr |
| Maria Plahn AB | Vallda | 0 tkr |
| Mariedals Fastigheter AB | Kungsbacka | 0 tkr |
| Marie Fischer konsult AB | Billdal | 0 tkr |
| Marie Wilderoth AB | Kullavik | 0 tkr |
| Mari Freidlitz Holding AB | Frillesås | 0 tkr |
| Mark Ecommerce AB | Särö | 0 tkr |
| Marketing och Event Sverige AB | Göteborg | 0 tkr |
| Markören AB | Västra Frölunda | 0 tkr |
| Markus Bergerheim Förvaltning AB | Särö | 0 tkr |
| Markwell AB | Åsa | 0 tkr |
| Markwell Consulting i Göteborg AB | Åsa | 0 tkr |
| Marlith AB | Onsala | 0 tkr |
| Marmgren Konsulter Aktiebolag | Onsala | 0 tkr |
| Marpet Agenturer AB | Varberg | 0 tkr |
| Mårten Gullberg AB | Kungsbacka | 0 tkr |
| Martin Anthonsen Consulting AB | Kullavik | 0 tkr |
| Martin Blomster Holding AB | Åsa | 0 tkr |
| Martin Holding AB | Västra Frölunda | 0 tkr |
| Martin Johansson Förvaltning AB | Kungsbacka | 0 tkr |
| M&A Skårvik Kläppa i Vallda AB | Vallda | 0 tkr |
| Mask International AB | Kungsbacka | 0 tkr |
| MASTEN AB | Särö | 0 tkr |
| Mastracom AB | Vallda | 0 tkr |
| Matilda Magnusson Consulting AB | Kungsbacka | 0 tkr |
| Matoll AB | Kungsbacka | 0 tkr |
| Mats Bertilsson Förvaltning AB | Kungsbacka | 0 tkr |