John Miles Walker
- Bats Right, Throws Right
- Height 6' 0", Weight 175 lb.
- Debut September 19, 1919
- Final Game October 2, 1921
- Born December 11, 1896 in Toulon, IL USA
- Died August 19, 1976 in Hollywood, FL USA
Johnny Walker played three years in the majors. After getting into a few games as a catcher in 1919-20 in the majors, with the 1921 Athletics he became the starting first baseman.
On August 18, 1921, the New York Times reported that Walker had suffered a brain concussion from a batted ball which knocked him unconscious.