Ángel Valdés "Jack" Aragón Reyes, Jr. (November 20, 1915 – April 4, 1988) was a Cuban professional baseball player and manager. His playing career spanned 13 season, including one game during the 1941 season in Major League Baseball with the New York Giants. In that one game, he was used as a pinch-runner and had no plate appearances. Aragón also played in the minor leagues with the Class-C Greenwood Giants, the Class-D Blytheville Giants, the Class-D Salisbury Giants, the Class-B Clinton Giants, the Class-B Winston-Salem Twins, the Class-A1 Knoxville Smokies, the Class-C Fort Smith Giants, the Double-A, and later Triple-A Minneapolis Millers, the Double-A, and later Triple-A Louisville Colonels and the Class-A Jacksonville Tars.