Seth Baczynski (born October 26, 1981) is an American professional mixed martial arts (MMA) fighter currently competing in the Middleweight division. A professional since 2006, Baczynski has formerly competed for the UFC, and was a cast member of Spike TV's The Ultimate Fighter: Team Liddell vs. Team Ortiz and The Ultimate Fighter: Redemption. He has also fought for top promotions such as the International Fight League, Tachi Palace Fights, World Lethwei Championship, and the Legacy Fighting Alliance.