Cecil Kellaway

 portrayed Santa Claus in the episode, "A Vision of Sugar Plums" (1964, 1965).

Biography
Cecil Lauriston Kellaway was a South African-born character actor. He spent many years as an actor, author and director in the Australian film industry until he tried his luck in Hollywood in the 1930s. Finding he could get only gangster bit parts, he got discouraged and returned to Australia. Then William Wyler called and offered him a part in Wuthering Heights (1939).

Kellaway received two Best Supporting Actor nominations, for "The Luck of the Irish" and "Guess Who's Coming to Dinner".