People who have competed at Australian events. Australia only, for now.
| Konstantinos Karakostas | White | Perth Hills - Legion 13 ( Midvale location) |
| Kooga Arnott | White | Braddah Jiu Jitsu |
| Kooper Kearns | White | Mota-Vation Brazilian Jiu Jitsu. |
| Kora Oui-Nona | White | Asylum MMA |
| Kora Regan | Yellow | GOIOERE BJJ TEAM |
| Koray Ildes | White | Legends Brazilian Jiu Jitsu Australia |
| Korban Valletta | Blue | TA | BYRON BAY |
| Korbey Brooks | White | Armour Brazilian Jiujitsu |
| Korbin Sayeg | White | Ignite Martial Arts Academy |
| Korbin Tangiiti | White | Gracie Barra Sydney |
| Korbin Turley | Grey | Complete Control Martial Arts |
| Korra Mcclelland | Grey | LEGACY |
| Korra Oneroa-Evans | Grey | GOIOERE BJJ TEAM |
| Kortez Dorset-Harvey | Green | Phronesis Jiu Jitsu |
| Kosta Crnic | Unknown belt | Harlequin's Brazilian Jiu-Jitsu |
| Kosta Pikos | Purple | SBG Australia |
| Kostas Anastasiou | Unknown belt | Global Martial Arts AU |
| Kova Ruaporo | White | Platinum Jiu Jitsu |
| Krane Burke | Blue | M16/Beachside Jiu-Jitsu |
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