| Mayne Pharma Group Ltd | |
| Maytech | |
| Mbit Technologies | New South Wales |
| McCauley Software Pty Ltd | New South Wales |
| McGraw Hill Australia | |
| Mcgregor Media | |
| McLaren Solutions | |
| McPherson Scientific Pty Ltd | Victoria |
| McQuillen Interactive Pty Ltd | Tasmania |
| mcrIT | New South Wales |
| me&u | |
| Mecca Computer Consulting | Victoria |
| Media Clock | |
| Media Fortress Pty Ltd | Victoria |
| Media Fusion | Australian Capital Territory |
| Media Heroes Pty Ltd | Queensland |
| Media Movers | New South Wales |
| Media NX Pty Ltd | |
| Media on Mars | Western Australia |
| Media Shark | |
| Media Today | |
| Media Web Hosting | Queensland |
| MediaCloud Australia | Western Australia |
| MediaConnect | |
| MediaConnect Australia Pty Ltd | New South Wales |
| MediaForm AU | New South Wales |
| Medical Developments International | |
| Medical IT Services | |
| Medical Software Industry Association | New South Wales |
| Medical-Objects Pty Ltd | |
| Medlink | Queensland |
| Medscope Pty Ltd | Tasmania |
| MedTech Actuator | Victoria |
| Meeco Group Pty Ltd | Victoria |
| meem | Queensland |
| Mega-nerd | New South Wales |
| Megabits.com.au | Queensland |
| MegaBuy | Queensland |
| Megaphone | Victoria |
| Megaport | Queensland |
| Megaprime | Western Australia |
| Meier Business Systems Pty Ltd | Victoria |
| MeKoo | Victoria |
| Melbourne Angels | Victoria |
| Melbourne Bioinformatics | Victoria |
| Melbourne Business School | Victoria |
| Melbourne Business Systems | Victoria |
| Melbourne Innovation Centre | Victoria |
| Melbourne Institute of Technology | Victoria |
| Melbourne IT | |