The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The largest MMA promotion in the world, the UFC has over 578 fighters contracted that fight across 11 weight divisions. The organization produces events worldwide and abides by the Unified Rules of Mixed Martial Arts. As of 2025, it had held over 750 events. Dana White has been its president since 2001 and CEO since 2023. Under White's stewardship, it has grown into a global multi-billion-dollar enterprise.