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.
| William Thompson | Purple | LEGACY |
| William Toilolo | Grey | Studio 55 Brazilian Jiu Jitsu |
| William Tree | Grey | Gracie Elite Australia |
| William Tsai | White | Quantum Martial Arts JJ |
| William Ung | White | Arte Suave Brazilian Jiu Jitsu |
| William Virando | White | Partizan Grappling Academy |
| William Von Schrottky | White | LCS GYM |
| William Walker | White | MENNA TOP TEAM BJJ |
| William Walker | White | MENNA TOP TEAM BJJ |
| William Wallace | Yellow | Fight Club Jiu-Jitsu team |
| William Wallace | White | LEGACY |
| William Walters | White | Clube de Lutas |
| William Wang | White | Gracie Barra Artarmon |
| William Whelan | Green | Boonchu |
| William Wilson | Grey | Gracie Barra Mona Vale |
| William Winterburn | Grey | Studio 55 Brazilian Jiu Jitsu |
| William Yelf | Grey | Gracie Barra Pymble |
| William Zaida | White | Harlequin's Brazilian Jiu-Jitsu |
| Willians Da Silva Trindade | Black | Nova Arte Brazilian Jiu Jitsu |
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