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.
| David Semeniuk |
| Grey |
| Gracie Barra St Peters Australia |
| David Semery | White | Quantum Martial Arts JJ |
| David Sforzin | White | DKMMA |
| David Sifris | Blue | Carlson Gracie Team |
| David Slater | White | Progression MMA |
| David Sorensen | Blue | Balance BJJ |
| David Staunton | White | De Been 100% Jiu Jitsu |
| David Stoilescu | Unknown belt | Sydney West Martial Arts |
| David Storey | Purple | De Been 100% Jiu Jitsu |
| David Suh | Blue | Gracie Barra West Ryde |
| David Sullivan | Blue | Gracie Elite Central Coast |
| David Symonds | White | Partizan Grappling Academy |
| David Tanzmann | Blue | ROOTS BJJ |
| David Tat | Blue | Forza Jiu Jitsu |
| David Tennant | White | Australian Elite Team |
| David Titley | Unknown belt | South Coast BJJ |
| David Tran | Blue | SJJA Team |
| David Trutoiu | Blue | Extreme Mixed Martial Arts Chadstone |
| David Tweedie | White | Gracie Balmain Jiu Jitsu |
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