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Updated October 2026. According to C-ELO™, the greatest UFC fighter of all time, men and women combined, is Jon Jones, followed by Georges St-Pierre, Islam Makhachev, Khabib Nurmagomedov and Anderson Silva.
GOAT rankings measure legacy. They are based on Peak C-ELO™, each fighter's rating at the highest point of their UFC career, so a late-career decline doesn't erase a great prime. Undefeated records and title fight wins earn extra credit.
Multiple-time champions are placed in a higher tier than fighters who never won a title, then ranked by Peak C-ELO™ within each tier. It's a deliberate, debatable choice that puts sustained championship success first.
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