Din Yero Thomas (born September 28, 1976) is an American mixed martial arts fighter who was featured on The Ultimate Fighter 4. He currently runs two successful Brazilian Jiu-Jitsu and MMA academies in Port St. Lucie, Florida and is a black belt in Brazilian Jiu-Jitsu under Ricardo Liborio. Thomas fights out of Florida and trains with American Top Team.
He holds notable wins over Dokonjonosuke Mishima, Jens Pulver, Matt Serra, Rich Clementi, Clay Guida, and Jeremy Stephens.
He has recently begun an acting career, playing in local independent films. According to IMDB he portrayed "The Fight Kid" in Chris Fuller's Loren Cass and Reverend Pierce in Natalie, Queen of Scots.