John Joseph "Jackie" Warner (born August 1, 1943 in Monrovia, California) is former Major League Baseball player. Warner played for the California Angels in the 1966 season as a right fielder. He played in 45 games in his one-year career. Warner had a .211 batting average, with 26 hits in 123 at-bats.
In 1967, Warner was traded to the Kansas City Athletics with Jack Sanford for Roger Repoz, but never played in a game for them.