| Market Ease Digital | |
| Marketboomer | |
| Marketeam | Queensland |
| Marketease | South Australia |
| Marketing Bee | New South Wales |
| Marketing Catalyst | |
| Marketing Munch Pty Ltd | New South Wales |
| Marketing One Group | Victoria |
| Marketing Sweet | |
| Marketinglab Agency | |
| MarketingResults.com.au | Queensland |
| Marketplacer | |
| Marketplacer | |
| Markinson | Queensland |
| Marlee Australia Pty Ltd | |
| Marli Technology Solutions Pty Ltd | Victoria |
| Martarna | |
| Mary Andrews College | |
| MASEDigital | |
| Maser Group | New South Wales |
| Mash Media Marketing | New South Wales |
| Masm32 SDK | New South Wales |
| Mass Electronics Pty Ltd | Queensland |
| MasterRemit Pty Ltd | Victoria |
| Mastt | |
| Matchmaster Communications Pty Ltd | New South Wales |
| mate4tech | |
| Mater Misericordiae Ltd | |
| Maths Pathway | |
| MathStat Software | Victoria |
| Matific | |
| MatrixThread | Victoria |
| MattaSoft Technology Solutions | Victoria |
| Matter Design Studio | New South Wales |
| Matter Solutions Pty Ltd | Queensland |
| Matterhorn Digital | |
| Matthew King | New South Wales |
| Maverick Mav Pty Ltd | New South Wales |
| Maxamation | New South Wales |
| maxemus Digital Marketing | |
| Maxial | Queensland |
| Maximum Conversions | Queensland |
| Maxinet | New South Wales |
| MaxIT | |
| Maxlence Consulting | Victoria |
| Maxo Telecommunications | Queensland |
| Maxsum Consulting | Victoria |
| MaxWebSurf | |
| Maybray Digital Pty Ltd | Queensland |
| Mayfield Education | |