Johnny Clark was born in Fort Worth, Texas on June 18, 1936. He began riding bareback horses in 1951 and bull in 1954. In 1964 and 1965 he was the International Rodeo Association’s World Champion All Around Cowboy. In 1964, he was their World Champion Bull Rider.
Clark was active in many regional and world rodeo associations and was inducted into the International Pro Rodeo Hall of Fame in Oklahoma City, Oklahoma in 1977.
In 2021 Clark was inducted into the Bull Riders Hall of Fame in Fort Worth.