| Juno Creative | Queensland |
| Just For You Software | New South Wales |
| JustData | Queensland |
| JustDevs | |
| Justpurple | Queensland |
| Justweb | New South Wales |
| Juuce Interactive | New South Wales |
| JWAN | Victoria |
| K-Graphics | |
| K3-Team Pty Ltd | |
| Kakadu Software | New South Wales |
| Kala Digital | |
| Kamban Software | New South Wales |
| Kanga Hosting Australia | Western Australia |
| Kangan Institute | |
| KangaWeb Technologies Pty Ltd | Queensland |
| Kanopi | Victoria |
| Kapiche Pty Ltd | Queensland |
| Kapish Serivces | Victoria |
| Kaplan Business School | |
| Kardinia Software | New South Wales |
| Karen Lily | Queensland |
| Karmabunny | South Australia |
| Katalyst Interactive | South Australia |
| Katonic Pty Ltd | New South Wales |
| Katron Creative | South Australia |
| KAYWEB Holdings Pty Ltd | New South Wales |
| Kazia Therapeutics Ltd | |
| KBB Digital | Victoria |
| KC Web Design | |
| KCC Tech Pty Ltd | Queensland |
| Keenstreet Communications | New South Wales |
| KeenToDesign | |
| Keep IT Simple Solutions | Queensland |
| Kent Institute Australia | |
| Kepler Soft | |
| Keston Holdings | New South Wales |
| Kestral | Victoria |
| Key2creative | Western Australia |
| KeyChange Solutions | New South Wales |
| KeyServer | Victoria |
| KeySpace | Western Australia |
| Keystone Software Consulting | |
| KeyTrust | Victoria |
| Keyword Discovery | Victoria |
| Khemistry | |
| Kick Media | |
| Kidis Creative | |
| Kim Beros Consulting Pty Ltd | Victoria |
| Kinatico | |