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.
| Orson Terence McComish | Brown | SJJA Team |
| Osaid Alshakhreet | Grey | Gracie Barra Liverpool |
| Oscar Anderson | White | Empire Martial Arts |
| Oscar Atkinson | White | M16/Beachside Jiu-Jitsu |
| Oscar Badenhorst | White | Lismore Jiu Jitsu Team |
| Oscar Barneveld | Unknown belt | Lemos Brazilian Jiu-Jitsu Academy |
| Oscar Bellairs Cassidy | White | Gracie Elite Australia |
| Oscar Borkovec | Unknown belt | SJJA Hornsby |
| Oscar Bradbury | White | De Been 100% Jiu Jitsu |
| Oscar Broer | Blue | Garra Brazilian Jiu Jitsu Australia |
| Oscar Cachia | White | Locals Jiu Jitsu Academy |
| Oscar Canavan | White | Renegade Grappling |
| Oscar Cheek | Grey | Integrated Combat Centre - Peakhurst |
| Oscar Clark | White | Absolute MMA |
| Oscar Cooper | White | Progression MMA |
| Oscar Culley | Blue | Alliance BJJ Australia |
| Oscar Denny | Grey | SJJA Bulimba |
| Oscar Duggan | Unknown belt | CAZA BJJ Australia |
| Oscar El-Youssef | White | Gracie Barra Mona Vale |
Matstories