Peter William Thomson AO, CBE (23 August 1929 – 20 June 2018) was an Australian professional golfer. He won the Open Championship five times between 1954 and 1965. Thomson is the only golfer to win a modern major three times in succession – The Open 1954, 1955, 1956.
Thomson was a prolific tournament champion around the world, winning the national championships of ten countries, including the New Zealand Open nine times. Thomson enjoyed a successful senior career. In 1985 he won nine times on the Senior PGA Tour in the United States, and finished top of the money list. His last tournament victory came at the 1988 British PGA Seniors Championship.
He was inducted into the World Golf Hall of Fame in 1988 and the Sport Australia Hall of Fame in 1985.