Cecil Kellaway (August 22, 1893 - February 28, 1973), born in Cape Town, South Africa, was an Academy Award-nominated British character actor.

Kellaway died in 1973, in Hollywood, California at the age of 79, and was interred in the Westwood Village Memorial Park Cemetery in Los Angeles. He received two Best Supporting Actor nominations, for The Luck of the Irish and Guess Who's Coming to Dinner. Edmund Gwenn, whose real name was Kellaway, was his cousin.

Though a native of South Africa, Cecil Kellaway 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). From then on Kellaway was always in demand when the part called for a twinkling, silver-haired leprechaun.

Cecil Kellaway was nominated for two Oscars for Best Supporting Actor for "Luck of the Irish" and "Guess Who's Coming to Dinner." Cecil was originally offered the role of Santa Claus in Miracle on 34th Street, but he turned it down, telling his son "Americans don't go for whimsy." His works also include some television. He played Santa Claus on an episode of Bewitched and appeared in "The Twilight Zone."