William Simon (1930–2000) was a sociologist of human sexualities between 1970 and 2000. His co-authored book, Sexual Conduct: The Social Sources of Human Conduct played a major role in shaping the contemporary sociology of sexuality and critical sexualities studies. His work helped pioneer a theory of sexual scripting and he was a gentle but radical advocate of sexual tolerance. He was an early advocate of gay rights and testified against obscenity laws.