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.
| Yasuharu Sugimoto | Purple | Moraes BJJ |
| Yatra Arjun | Grey | SJJA Team |
| Yawara Shiosawa | White | Australian Elite Team |
| Yechan Isaac Kim | Blue | Shibusa |
| Yechan Kim | Blue | Shibusa |
| Yegor Harkavyy | Blue | Prodigy Martial Arts AU |
| Yehiya Tahsildar | White | Bankstown Martial Arts |
| Yejoo Gwak | White | Arte Suave Brazilian Jiu Jitsu |
| YeJun Lee | White | Cortex MMA |
| Yen Vu | Unknown belt | SJJA Prestons |
| Yentl Rubinstein | White | Equinox Academy |
| Yeochan Yun | Black | Taekwondo World Martial Arts |
| Yeomin YUN | Unknown belt | Taekwondo World Martial Arts |
| Yeonjun Cha | White | Clube de Lutas |
| Yeshan Gunarathne | White | BJJ Lotus Club |
| Yesung Kim | White | Kazoku Jiu Jitsu Academy |
| Yianni Kordos | Blue | True Grit Jiu Jitsu |
| Yianni Papas | White | Grappling Education |
| Yianni Sukkarie | White | EQUIPE MESTRE WILSON JIU-JITSU AUSTRALIA |
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