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.
| Greg Atzori | Black | De Been 100% Jiu Jitsu |
| Greg Gonzalez | White | Taurus Brazilian Jiu Jitsu |
| Greg Hagi | Brown | Melbourne Budo Academy |
| Greg Hagi | Purple | Melbourne Budo Academy |
| Greg Jones | White | Absolute MMA |
| Greg Karageuzian | White | Gracie Barra Sydney |
| Greg Kerrisk | Black | Galeb BJJ |
| Greg Loeckenhoff | White | Mildura Brazilian Jiu Jitsu |
| Greg Przewlocki | White | SJJA Team |
| GREG WALKER | Blue | Wolves Den Perth |
| Greg Zammit | Black | LEGACY |
| Gregor Campbell | White | 10th Planet Jiu Jitsu Australia |
| Gregor Davies | White | Wolves Den Perth |
| Gregory Amanatidis | Purple | Omega Jiu Jitsu and Mixed Martial Arts |
| Gregory Busanello | Blue | Life BJJ |
| Gregory DeBono | White | TRINITY Australia |
| Gregory J Carter | White | Infinity Brazilian Jiu JItsu Australia |
| Gregory Plakias | Unknown belt | SlipStream MA |
| Gregory Probyn | Black | De Been 100% Jiu Jitsu |
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