| Kala Digital | |
| Kamban Software | New South Wales |
| Kanga Hosting Australia | Western Australia |
| KangaWeb Technologies Pty Ltd | Queensland |
| Kanopi | Victoria |
| Kapiche Pty Ltd | Queensland |
| Kapish Serivces | Victoria |
| 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 | New South Wales |
| KBB Digital | Victoria |
| KCC Tech Pty Ltd | Queensland |
| Keenstreet Communications | New South Wales |
| Keep IT Simple Solutions | Queensland |
| Keston Holdings | New South Wales |
| Kestral | Victoria |
| Key2creative | Western Australia |
| KeyChange Solutions | New South Wales |
| KeyServer | Victoria |
| KeySpace | Western Australia |
| KeyTrust | Victoria |
| Keyword Discovery | Victoria |
| Kick Media | |
| Kidis Creative | |
| Kim Beros Consulting Pty Ltd | Victoria |
| King Computer Solutions Pty Ltd | New South Wales |
| Kingfisher | |
| Kinny Legal Pty Ltd | New South Wales |
| Kinoxis Therapeutics Pty Ltd | Victoria |
| Kintek.com.au Pty Ltd | Queensland |
| KIRA Biotech Pty Ltd | Queensland |
| Kirtech Pty Ltd | Victoria |
| Kite & Dart Pty Ltd | New South Wales |
| KJ Hosting | New South Wales |
| KMO Design Pty Ltd | Queensland |
| KMT Partners | South Australia |
| KNect365 | New South Wales |
| KNet Technology | New South Wales |
| Knowledge & Information Management | New South Wales |
| Koala Net | Queensland |
| Komosion | Victoria |
| Kontron Australia | New South Wales |
| Kook | Queensland |
| Kordz Pty Ltd | Victoria |
| Kray | New South Wales |