People who have competed at Australian events. Australia only, for now.
| Kit Haughton-greene | White | DKMMA |
| Kit Pham | White | Kings Academy Australia |
| Kitae Jeon | Blue | Revolution Martial Arts Australia |
| Kitty Steilberg | Grey | SJJA Team |
| KJ Fechner | White | Element Australia |
| Kjartan Boyle | White | De Been 100% Jiu Jitsu |
| Klade Hauschildt | White | CAZA BJJ Australia |
| Klay Ferrer | White | Gracie Barra Surfers Paradise |
| Kleanthis Sotiriou | Grey | Team Perosh MMA |
| Kleo Johansson | Grey | Team Lead |
| Kluivert Ngwena | Blue | EQUIPE MESTRE WILSON JIU-JITSU AUSTRALIA |
| Knox Andonopoulos | Grey | woven jiu jitsu |
| Knox Higginbottom | Grey | Lake Macquarie Jiu-Jitsu |
| Knox Hirst | White | Studio 55 Brazilian Jiu Jitsu |
| Koa Griffin | Unknown belt | Carlson Gracie Gold Coast |
| Koa Little | Grey | Kronos BJJ |
| Koa Matta | White | Fight Club Jiu-Jitsu team |
| Koa Neho-Leathers | White | Australian Elite Team |
| Koa Oliveira | Grey | Lemos Brazilian Jiu-Jitsu Academy |
Wave