Keith Alan Brantly (born May 23, 1962) is an American former long-distance runner who represented the United States at the 1996 Summer Olympics in Atlanta, Georgia. Brantly competed in the men's marathon, and finished twenty-eighth of 111 runners who completed the race, in a time of 2:18:17.He graduated from the University of Florida with a bachelor's degree in exercise and sport science in 1986, and was later inducted into the University of Florida Athletic Hall of Fame as a "Gator Great."