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.
| Ethan Cannon | Black | Essence Brazilian Jiu Jitsu |
| Ethan Cashmere | White | Hunter Valley Jiu Jitsu |
| Ethan Cassar | Grey | Australian Elite Team |
| Ethan Chang | Grey | Gracie Barra Carlton |
| Ethan Chen | Grey | Extreme Mixed Martial Arts Chadstone |
| Ethan Craggs | Unknown belt | M16/Beachside Jiu-Jitsu |
| Ethan Cranston | White | Fight World Australia |
| Ethan Della | White | Primal MMA |
| Ethan Diamond | White | Carlson Gracie Gold Coast |
| Ethan Dickie | White | De Been 100% Jiu Jitsu |
| Ethan Djuhari | Grey | SJJA Team |
| Ethan Doherty | Grey | Progression MMA |
| Ethan Duncan | Yellow | GOIOERE BJJ TEAM |
| Ethan Enoch-Barlow | Black | One Purpose BJJ |
| Ethan Exposito | Grey | Mackay MMA |
| Ethan Fairchild | Blue | Odyssey Jiu Jitsu Academy |
| Ethan Farah | Grey | AJA - Alavanca Jiujitsu Academy |
| Ethan Fenton | Blue | Atlantic Grappling Team |
| Ethan Fitzgerald | Purple | Australian Elite Team |
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