Tom O'Horgan (May 3, 1924 – January 11, 2009) was an American theatre and film director, composer, actor and musician. He is best known for his Broadway work as director of the hit musicals Hair and Jesus Christ Superstar. During his career he sought to achieve a form of "total theater" described by The New York Times as "wittily physical", and which earned him a reputation as the "Busby Berkeley of the acid set".