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.
| Oliver Basista | White | Gracie Barra Toronto Australia |
| Oliver Behns | Grey | Carlson Gracie Gold Coast |
| Oliver Bell | White | Lab 33 |
| Oliver Bell | White | Kings MMA |
| Oliver Bell | Grey | HUIA MARTIAL ARTS |
| Oliver Borg | White | Grappling Bros / GFTeam |
| Oliver Boulos | White | Cortex MMA |
| Oliver Bracci | White | Gracie Barra St Peters Australia |
| Oliver Campbell | Grey | Martial Arts Spirit |
| Oliver Campos | White | LEGACY |
| Oliver Cavalcante | White | Gracie Barra Carlton |
| Oliver Cesar Diaz | Yellow | Kumite Jiu Jitsu |
| Oliver Chisholm | Grey | Galeb BJJ |
| Oliver Chuttoo | White | AMA Australian Martial Arts |
| Oliver Collins | White | Gracie Barra Burleigh Heads |
| Oliver Crowcroft | Grey | De Been 100% Jiu Jitsu |
| Oliver Cunningham | Grey | Jerrabomberra's BJJ |
| Oliver De Courcy Dutton | Grey | LEGACY |
| Oliver Dek | White | 5th Wave BJJ |
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