Francisco Santos Mir III (; born May 24, 1979), is an American mixed martial artist who most recently competed for Bellator MMA in the Heavyweight division. He formerly competed in the Ultimate Fighting Championship (UFC) for sixteen years. A former two-time UFC Heavyweight Champion, he holds the record for the most finishes and the most submission victories in UFC Heavyweight history. Mir possessed the longest uninterrupted tenure of any fighter in UFC history, competing for the company from 2001 to 2016. He was the first man to knock out and the first to submit Antônio Rodrigo Nogueira.
