Trevor Donald Oldham (10 March 1900 – 2 May 1953) was an Australian politician, who was the leader of the Liberal Party in the state of Victoria from 1952 until his death in 1953. The eldest of three sons born to Arthur and Ethel Oldham, he was educated at Melbourne Church of England Grammar School and the University of Melbourne. He had enlisted in the Australian Imperial Force on 7 November 1918, four days before the Armistice. He married Kathleen Cooch in 1929.