Thomas Dean Aaron (born February 22, 1937) is an American former professional golfer who was a member of the PGA Tour during the 1960s, 1970s and 1980s. Aaron is best known for winning the 1973 Masters Tournament. He is also known for an error in the 1968 Masters Tournament, when he entered a 4 instead of a 3 on Roberto De Vicenzo's scorecard, which kept De Vicenzo out of a playoff for the tournament.
