Jason Christopher Dufner (born March 24, 1977) is an American professional golfer who currently plays on the PGA Tour where he is a five-time winner. He has won one major championship, the 2013 PGA Championship. He was also runner-up in the 2011 PGA Championship, losing a playoff to Keegan Bradley. Dufner was ranked in the top 10 in the Official World Golf Ranking for 50 weeks; his career-high ranking is sixth in September 2012.
Dufner was born in Cleveland, Ohio. He moved to the Washington, D.C. area when he was 11 years old, and then to Fort Lauderdale, Florida, when he was 14. It was there that he started playing golf, and played for St. Thomas Aquinas High School during his sophomore, junior, and senior years.
Dufner was a walk-on at Auburn University, where he won three times in his college career and was an Honorable Mention All-American in 1997. He graduated from Auburn in 2000 with a degree in economics.