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 White | White | Cia Paulista Australia |
| Jack Willard | Grey | Golden Fox Brazilian Jiu Jitsu |
| Jack William | White | EQUIPE MESTRE WILSON JIU-JITSU AUSTRALIA |
| Jack William Bowie | Blue | Pure Jiu Jitsu Southern Highlands |
| Jack William Smith | Blue | Hobart martial arts academy |
| Jack Williams | Grey | Cia Paulista Australia |
| Jack Wills | White | GARAGE JIU-JITSU |
| Jack Willsher | Purple | Open Mat Jiu Jitsu |
| Jack Woo | Grey | Golden Fox Brazilian Jiu Jitsu |
| Jack Woodward | White | Powercore MMA |
| Jack Yates | White | Ace Academy Jiujitsu Sydney |
| Jack Young | White | Team Compton |
| Jackie Casado | White | Cia Paulista Australia |
| Jacko Oburayo | Unknown belt | Life BJJ |
| Jackson Anderson | Brown | Gracie Barra Shellharbour |
| Jackson Arnold | Blue | Grapple Factory |
| Jackson Bailey | Blue | Grappling Education |
| Jackson Blenkin | Grey | Behan Jiu Jitsu |
| Jackson Bragg | Unknown belt | Marcelino Freitas BJJ |
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