Daniel Seltzer (13 February 1933 — 2 March 1980) was a professor of English at Princeton University, an actor and a Shakespearean scholar. He was nominated for a Tony Award for Best Performance by a Featured Actor in a Play in 1976 for his performance in Jules Feiffer's Knock Knock and had a role in director Paul Mazursky's 1978 film An Unmarried Woman starring Jill Clayburgh.