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.
| JACK MARRON | White | BRAVOS BJJ |
| Jack Martin | Brown | Gracie Elite Australia |
| Jack Martin | White | SOUTHSIDE BRAZILIAN JIU-JITSU OFFICIAL |
| Jack Martinez | Grey | Waves Martial Arts Comp Team |
| Jack Mccloskey | White | SJJA Brookvale |
| Jack McDonald | Blue | Ares MMA |
| Jack McDonald | Unknown belt | The Jiu-Jitsu Studio Darwin |
| Jack McGarry | White | BONDI JIU JITSU ACADEMY |
| Jack McGrath | White | Martial Arts Queensland |
| Jack McWeeney | Black | Lemos Brazilian Jiu-Jitsu Academy |
| Jack Metherall | Purple | Galeb BJJ |
| Jack Millar | White | Ako Martial Arts |
| Jack Millburn | White | Mackay MMA |
| Jack Mosher | White | LEVELS JIUJITSU CLUB |
| Jack Murphy | White | LEGACY |
| Jack Murray | Blue | Concept Jiu Jitsu |
| Jack Mylne | Grey | Temple Jiu Jitsu |
| Jack Newell | White | Jiu Jitsu Kingdom |
| Jack Newman | Blue | CAZA BJJ Australia |
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