John Charles "Jack" Crooks (November 9, 1865 – February 2, 1918) was an American Major League Baseball infielder born in St. Paul, Minnesota. He played mainly as a second base, but did spend some time playing third base for four teams during his eight seasons ranging from 1889 to 1898. Crooks also amassed a career on-base percentage of .386 despite a Batting average of just .240, due to large part to the high walks totals he compiled. Jack died at the age of 52 in St. Louis, Missouri and was interred at Valhalla Cemetery.