People who have competed at Australian events. Australia only, for now.
| William Chester | Brown | Australian Elite Team |
| William Davies | Grey | Extreme Mixed Martial Arts Chadstone |
| William Godden | Grey | Empire Martial Arts |
| William Guthrie | Purple | SOUTHSIDE BRAZILIAN JIU-JITSU OFFICIAL |
| William Halstead | White | Roll up Jiu-jitsu |
| William Hobday | Grey | Grappling Bros / GFTeam |
| William Hughes | Grey | Gracie Barra Edgeworth |
| William Jeffreys | Grey | Ako Martial Arts |
| William Le | White | Apex Brazilian Jiu Jitsu |
| William Loebis-Arnost | Black | Australian Elite Team |
| William Lythgoe | Yellow | Gemina |
| William Maciejowski | White | High Rollers |
| William Maclean | Yellow | LEGACY |
| William Major | Grey | Flow State BJJ - Chelsea Heights |
| William Moloney | Grey | Bayside BJJ |
| William Moncrief | Blue | MAROCCOLO ACADEMY |
| William Moraes | Black | SOUTHSIDE BRAZILIAN JIU-JITSU OFFICIAL |
| William Nguyen | White | Integrated MMA HQ |
| William Peake | Blue | Quantum Martial Arts JJ |
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