| 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 Web Hosting | Queensland |
| MediaCloud Australia | Western Australia |
| MediaConnect | |
| MediaConnect Australia Pty Ltd | New South Wales |
| MediaForm AU | New South Wales |
| Medical Software Industry Association | New South Wales |
| 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 | Victoria |
| Melbourne IT | |
| Melbourne Knowledge Week | Victoria |
| Melbourne Mobiles Pty Ltd | Victoria |
| Melbourne Online | Victoria |
| Melbourne PC User Group, Inc. | Victoria |
| Melbourne Polytechnic | Victoria |
| Melbourne Satellites | Victoria |
| Melbourne School of Engineering | Victoria |
| Memories Group Ltd | Victoria |
| Menkom | New South Wales |
| Mentat Web Designs | Victoria |
| Meridian 86 Pty Ltd | Queensland |
| Meshmedia | New South Wales |
| Mesoblast Ltd | |
| Message4u Pty Ltd | Victoria |
| Meta Creative | Western Australia |
| Metavurx VR | New South Wales |
| Metawerx Pty Ltd | Victoria |