People who have competed at Australian events. Australia only, for now.
| Ishaq Moussa | Grey | Phoenix Martial Arts Australia Pty Ltd |
| Isi Kioa | White | SJJA Team |
| Isiah Filipovic | Grey | De Been 100% Jiu Jitsu |
| Isiah Hannoun | Grey | Gracie Barra Carlton |
| Isiah McLennan | Grey | Fight Club Jiu-Jitsu team |
| Isla Broadhead | White | Insight Jiu Jitsu Academy |
| Isla Chetty | Grey | Concept Jiu Jitsu · Will Machado - Comp Team |
| Isla Crozier | Grey | Team Sparta |
| Isla Farlam | Grey | M16/Beachside Jiu-Jitsu |
| Isla Hannoun | Grey | Gracie Barra Carlton |
| Isla John | Grey | CHECKMAT AUSTRALIA |
| Isla Kelly | Grey | Virtue Brazilian Jiu-Jitsu Australia |
| Isla McKenna | Grey | The Good Dose · SJJA Team |
| Isla Morrison | White | Gracie Barra Carlton |
| Isla Muir | Grey | DCA MMA |
| Isla Santos | Grey | Gracie Barra Tweed Heads |
| Isla Standen | Grey | Flux Jiu Jitsu |
| Isla Taveras | Unknown belt | Mackay MMA |
| Isla-Rose Phillips | White | Randori Jiu Jitsu Australia |
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