Won a 1969 Special Tony Award (New York City).
Won three Tony Awards: in 1949, as Best Actor (Dramatic) for "Anne of the Thousand Days"; in 1957, as Best Actor (Musical) for "My Fair Lady", which he recreated in an Oscar-winning performance in the film version of the same title, My Fair Lady (1964) and a Special Tony Award in 1969. He was also nominated in 1984 as Best Actor (Play) for his role as Capt. Shotover in George Bernard Shaw's "Heartbreak House".