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.
| Nicholas Bilton | Unknown belt | Academy 411 |
| Nicholas Brasen | White | Mentality Jiu Jitsu |
| Nicholas Broadbent | White | Australian Elite Team |
| Nicholas Brugmans | White | Concept Jiu Jitsu |
| Nicholas Burgos-Cuevas | White | DKMMA |
| Nicholas Campos | White | ACE Martial Arts |
| Nicholas Carles | Blue | Gracie Barra Orange |
| Nicholas D'Angelo | Grey | Will Machado - Comp Team |
| Nicholas De Araujo | White | Pacheco Jiu Jitsu |
| Nicholas Demian | Yellow | Limitless MMA |
| Nicholas Di Martino | White | Gracie Sutherland Shire (formerly Gracie Miranda) |
| Nicholas Dias | White | GOIOERE BJJ TEAM |
| Nicholas Dore | Purple | SJJA Team |
| Nicholas Dowd | White | Ascend Jiu Jitsu Mount Gambier |
| Nicholas Duvnjak | Blue | Technique Jiu Jitsu |
| Nicholas Ede | Blue | Empire Martial Arts |
| Nicholas Eglin | White | No Limits Gym |
| Nicholas Ellul | White | Australian Elite Team |
| Nicholas Emmanouil | Blue | Bayside BJJ |
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