John Albert "Automatic Jack" Manders (January 13, 1909 – January 29, 1977) was an American football player.
He played professionally in the National Football League (NFL) for the Chicago Bears from 1933 to 1940.
Manders was a member of the Chicago team coached by George Halas that defeated the Washington Redskins in the 1940 NFL Championship Game by the memorable score of 73-0.
He was the older brother of Clarence "Pug" Manders.