Justin Charles Garrett Leonard (born June 15, 1972) is an American professional golfer.
Leonard was born and raised in Dallas, Texas. He attended Lake Highlands High School and graduated in 1990. He attended the University of Texas at Austin and was the individual NCAA champion in 1994. He won the Haskins Award in 1994 as the most outstanding collegiate golfer.
Leonard's first twelve wins on the PGA Tour included one of golf's four majors — the 1997 British Open; and the 1998 Players Championship. He ranked in the top-10 of the Official World Golf Rankings for several weeks in 1998 and 1999. He also came close to winning two more major championships; he lost playoffs at the 1999 British Open and the 2004 PGA Championship, in both instances falling into the playoff with a bogey on the 72nd hole.