Herbert Dean (born September 30, 1970) is a professional mixed martial arts referee and former mixed martial artist from the United States. Dean has worked events put on by the Ultimate Fighting Championship and ONE Championship promotions, among others. UFC president Dana White, UFC color commentator Joe Rogan, articles covering MMA in ESPN.com, Fox Sports, Bleacher Report, SB Nation (mmamania.com), Fightland and other publications have called Dean the gold standard for referees in MMA.