People who have competed at Australian Brazilian jiu-jitsu and grappling events. Australia only, for now. See Australian BJJ rankings for recorded wins by belt, state, and ruleset.
| Konstantinos Bakas | Unknown belt | Born Ready MMA |
| Konstantinos Karakostas | White | Perth Hills - Legion 13 ( Midvale location) |
| Konstantinos Konstandaras | Blue | Platinum Jiu Jitsu |
| Kooga Arnott | White | Braddah Jiu Jitsu |
| Kooper Kearns | White | Mota-Vation Brazilian Jiu Jitsu. |
| Kora Millie Regan | Yellow | GOIOERE BJJ TEAM |
| Kora Oui-Nona | White | Asylum MMA |
| Kora Regan | Yellow | GOIOERE BJJ TEAM |
| Koray Ildes | White | Legends Brazilian Jiu Jitsu Australia |
| Koray Vasfi | White | Team Perosh MMA |
| Korban Poumale | White | Legends Brazilian Jiu Jitsu Australia |
| Korban Valletta | Purple | 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 |
Matstories