Fedor Vladimirovich Emelianenko (born September 28, 1976) is a Russian heavyweight mixed martial artist, the current World Alliance of Mixed Martial Arts Heavyweight Champion and the last holder of the Pride Heavyweight Championship. He has won numerous tournaments and accolades in multiple sports, most notably the Pride 2004 Grand Prix and the World Combat Sambo championship on four occasions, as well as medaling in the Russian national Judo championship.

Emelianenko's only loss in the sport is controversial, and came at the hands of Tsuyoshi Kohsaka at the King of Kings 2000 Block B event on December 22, 2000, via doctor stoppage due to a cut 17 seconds into the fight. Footage shows that the cut was caused by a missed looping punch where Kohsaka's elbow struck Emelianenko's head. Elbow strikes are illegal under Rings rules unless the striker is wearing elbow pads, which Kohsaka was not.