Dean Smith was raised in Eliasville, Texas, and later lived in Breckenridge, Texas, where he raised horses and longhorn cattle. He attended the University of Texas at Austin where he competed in track and football. He won an Olympic gold medal for the 400-meter relay in the 1952 Helsinki games and finished fourth in the 100 dash in the closest race in Olympic history. He was the lead-off man on the University of Texas world record relay team, 1954-55, and AAU national champion in the 100-meter dash. He played with the Los Angeles Rams during exhibition season and was traded to the Pittsburg Steelers at which time he decided to enter the movie business. He also won amateur rodeo championships for bareback bronco riding and calf roping.