Bob Garretson (born April 8, 1933) is a retired American racing driver.
Garretson was the owner-driver of a Porsche 935 sports car team named Garretson Developments in the early 1980s that competed part-time in both the World Sportscar Championship and IMSA GT Championship. In 1981 along with veteran Brian Redman and Bobby Rahal Garretson won the 24 Hours of Daytona. Despite not winning another race that season, Garretson won the 1981 World Endurance Championship for Drivers title. He sold the team and retired from racing shortly thereafter.