反英雄（英文：Antihero）是文学、电影、戏剧作品中有着属于反派的缺点但同时具有英雄气质或做出英雄行为的角色。反英雄可以是主角或重要的配角。

An antihero (or antiheroine) is a protagonist who lacks conventional heroic qualities such as idealism, courage, or morality. These individuals often possess dark personality traits such as disagreeableness, dishonesty, and aggressiveness. These characters are usually considered "conspicuously contrary to an archetypal hero".