John Ellsworth Turner Jr (February 12, 1920 Seattle, Washington – September 12, 2004 Renton, Washington) was an American racecar driver. He was nicknamed "Cactus Jack." He served in the South Pacific during the Second World War.
Midget car career
thumb|right|1954 AAA National Midget trophy
thumb|right|1955 AAA National Midget trophy
Turner became the first two-time AAA National Midget champion when he won the 1954 and 1955 championships. Turner scored no wins in 1954 despite competing at the entire circuit, and won the championship on consistent high finishes. He won six features in 1955. He also had 14 National USAC wins in his career.
Champ car
Turner drove in the AAA and USAC Championship Car series, racing in the 1955–1962 seasons with 35 starts, including the Indianapolis 500 races in 1956-1959 and 1961–1962. He finished in the top-ten 35 times, with his best finish in second position in 1956 at Darlington. He retired from racing after flipping his car during a practice run at Indy in 1963. It was his third flip in three years at the track: first down the main straightaway in 1961, second he broke his pelvis at the head of the frontstretch, and third he crushed a vertebra.