Justin Thomas (born April 29, 1993) is an American professional golfer who plays on the PGA Tour.

Born and raised in Louisville, Kentucky, Thomas graduated from St. Xavier High School in 2011. Prior to his junior year in high school, he played in the Wyndham Championship on the PGA Tour in August 2009 and became the third youngest to make the cut in a PGA Tour event at 16 years, 3 months and 24 days. Thomas played college golf at the University of Alabama in Tuscaloosa, where he won six times for the Crimson Tide, and was on the national championship team of 2013. As a freshman in 2012, he won the Haskins Award as the most outstanding collegiate golfer.