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.
| Simon Twiss | Blue | Gracie Barra Menai |
| Simon Um | Unknown belt | Kings Academy Australia |
| Simon Van Every | White | Will Machado - Comp Team |
| Simon Wardan | Brown | Parramatta Jiu Jitsu Academy |
| Simon Whitehead | Blue | Kings MMA |
| Simon Williams-Pugh | White | Chess Club Jiu-Jitsu |
| Simon Younan | White | Australian Elite Team |
| Simon Youssef | Yellow | Lab 33 |
| Simon-Gabriel Ionian | White | The Grappling Club |
| Simone Licciardi | White | Gracie Barra Hoppers Crossing |
| Simpson Dat Le | White | IGOR MMA SYDNEY |
| Simren Brar | Blue | Fight Club Jiu-Jitsu team |
| Sina Rezaei | White | Grappling Bros / GFTeam |
| SINBI LEE | Purple | The Academy of Grounding |
| Sinclair Bourke | White | Grow Strong MMA |
| Sindu Karamchedu | Blue | Ares MMA |
| Siobhan Back | Purple | Chave De Ouro |
| Siobhan Duffy | White | Clube de Lutas |
| Siobhan Duffy | White | BRAVOS BJJ |
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