Joseph Crehan (July 15, 1883 – April 15, 1966) was an American film actor. He appeared in more than 300 films between 1916 and 1965, and notably played Ulysses S. Grant nine times between 1939 and 1958, most memorably in Union Pacific and They Died With Their Boots On. He was born in Baltimore, Maryland and died in Hollywood, California from a stroke.

Crehan often played alongside Charles C. Wilson with whom he is sometimes confused.