Daniel Jeffrey Henderson (Downey, August 24, 1970) is a mixed martial arts fighter and former US Olympic wrestler. He fights in the middleweight division for UFC. Previously he fought in the light heavyweight division. It was the last Strikeforce light heavyweight champion and the last welterweight (83.5 kg) and average weight (93 kg) champion of the defunct Pride Fighting Championships.
It was the only wrestler in MMA simultaneously hold two titles in two different weight classes in the major leagues of mixed martial arts. Henderson also won the tournament middleweight UFC 17, the tournament lightweight Brazil Open 1997 tournament RINGS King of Kings 1999 and 2005 Pride Welterweight Grand Prix tournament. He also made as manager in the ninth season of the reality show The Ultimate Fighter.