Peter Cecil Wilson CBE (8 March 1913 – 3 June 1984) was an English auctioneer and chairman of Sotheby's. Wilson's father was Sir Mathew Wilson, 4th Baronet of Eshton Hall, Gargrave, Yorkshire. He was educated at Eton College and at New College, Oxford. He married Helen Ballard in 1935 who he had met in Hamburg. They had two sons and she became a noted horticulturist after he became attracted to men. The marriage was dissolved in 1951 and they remained on good terms. He appeared as a castaway on the BBC Radio programme Desert Island Discs on 26 September 1966.