His first film appearance was in Kelly the Second (1936), followed by Dark Manhattan (1937). His other film credits include The Jackie Robinson Story (1950), Carmen Jones (1954), Porgy and Bess (1959), The Sound and the Fury (1959), A Raisin in the Sun (1961), with Sidney Poitier, Ruby Dee and Claudia McNeil, and a memorable turn as Mr. Prentice (again playing opposite Poitier) in the 1967 film Guess Who's Coming to Dinner. Roy Glenn's last big screen appearance was in Support Your Local Gunfighter (1971).
Glenn's career spanned five decades, beginning in radio with The Amos 'n' Andy Show and The Jack Benny Show. He made numerous appearances from the dawn of television (including many authoritative roles on The Amos 'n' Andy Show, 1951-53) until 1970.
