Masten Gregory, American race car driver (d. 1985)
Masten Gregory (February 29, 1932 − November 8, 1985) was an American racing driver. He raced in Formula One between 1957 and 1965, participating in 43 World Championship races, and numerous non-Championship races.
He was also a successful sports car racer, winning (with Jochen Rindt) the 1965 24 Hours of Le Mans.