Garrett Michael Willis (born November 21, 1973) is an American professional golfer who plays on the PGA Tour and the Nationwide Tour.
Willis was born in Charlotte, North Carolina. He attended East Tennessee State University where he was member of the golf team, a first-team All-American his senior year. He won the Canadian Amateur Championship in 1995. He graduated and turned professional in 1996.
Willis began his career in professional golf playing on the Hooters Tour and in selected international events. He then moved up to the BUY.COM Tour (the precursor of the Nationwide Tour). Willis made his debut on the PGA Tour at the Touchstone Energy Tucson Open in 2001, and became the fourth Tour player to win in his first start as a member joining Marty Fleckman (1967), Ben Crenshaw (1973) and Robert Gamez (1990).