| Mandora Web | Bavaria |
| ManekTech Germany | |
| Manétage | Hesse |
| Manhattan Skyline GmbH | Hesse |
| Mani.de | Bavaria |
| Manitu | Saarland |
| Mannheim Business Angels Network e.V. | |
| Mannheimer Gründungszentren GmbH | |
| Mantau | |
| mantro GmbH | |
| Manz AG | |
| Mapegy GmbH | |
| MapTrip | |
| MAPWARE GmbH | |
| Maqsima GmbH | Saarland |
| Mar-Bit | North Rhine-Westphalia |
| MARA Solutions GmbH | |
| Marakos | |
| Marbek Elektronik | Rhineland-Palatinate |
| Marberg Internet Services | North Rhine-Westphalia |
| Marc Päpper | |
| MarcanT AG | Hesse |
| Marcel Bresink Software-Systeme | Rhineland-Palatinate |
| Marcley GmbH | |
| Marco Behler GmbH | Bavaria |
| Marco Kuttkat | North Rhine-Westphalia |
| marco System Analysis and Development GmbH | |
| Marco van Meegen Senior IT Consultant | Bavaria |
| Marcus Frings | Mecklenburg-Vorpommern |
| Marcus Gliewe Computerservice | Hamburg |
| Marcus Humann Software-Technik | North Rhine-Westphalia |
| Marek Böttcher | Baden-Württemberg |
| Marela WWW Design | Baden-Württemberg |
| Mares ITX GmbH | |
| Marina Weber Systemtechnik e. Kfr. | |
| Marine Digital | |
| Marini Systems GmbH | |
| Mario Lorek | Baden-Württemberg |
| Mario Schwertfeger SEO Experte & Berater | |
| Marit AG | Bavaria |
| Markemotion GmbH | Bavaria |
| markenteam behind you GmbH | |
| markenzeichen Marketing Agentur | Hesse |
| Market Logic Software AG | |
| marketer UX GmbH | |
| Marketing Bro | |
| Marketing Factory Consulting GmbH | North Rhine-Westphalia |
| Marketing Planet | |
| Marketing-Club Düsseldorf e.V. | North Rhine-Westphalia |
| Marketing-Club München e.V. | Bavaria |