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.

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.

This biographical article relating to an American baseball outfielder born in the 1940s is a stub.