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.
| Seondong Kim | Purple | Kronos BJJ |
| Sep Beheshti | White | Grand Martial Arts |
| Sepeti Hoke | White | Team Perosh MMA |
| Sequoia Fili | White | Atlantic Grappling Team |
| Sequoia Wragg | Grey | Gracie Barra Pymble |
| Seraphine Browne | Grey | CAZA BJJ Australia |
| Serayah As | White | Grappling Bros / GFTeam |
| Serdar Eroglu | Brown | Besnek Jiu Jitsu |
| Seref Kuru | Blue | Besnek Jiu Jitsu |
| Serena Khatib | Unknown belt | SJJA PARRAMATTA |
| Serena Mantua | Grey | High Rollers |
| Serene Waipouri | White | Fight Club Gym |
| Serenity Burton | White | Gracie Barra Penrith |
| Sergei Kariukin | Blue | SJJA Team |
| Sergej Anciferov | Purple | Bayside BJJ |
| Sergio Costabile | Unknown belt | Arte Suave Brazilian Jiu Jitsu |
| Sergio Fernandes | Black | SJJA Team |
| Serkan Balta | Blue | Australian Submission Academy |
| Serkan Demir | Unknown belt | Grappling Education |
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