John Rodney Buckmaster (18 July 1915 – 1 April 1983) was an English actor on the stage, in films and on television, and a cabaret singer-songwriter. He was the son of actress Gladys Cooper (1888–1971) and Captain Herbert Buckmaster (1881–1966). Educated at Eton College, he followed his mother into the acting profession and worked on both sides of the Atlantic.