The American Amateur Baseball Congress is the sponsoring organization of the Connie Mack World Series. The AABC provides activities for youth and young adult baseball players through seven league divisions in the U.S. and Puerto Rico. Connie Mack regular season play allows players ages 16 to 18 to participate.

The AABC mission is to enlarge and advance the scope of amateur baseball by stimulating interest and competition and to provide a sound, experienced organization to assist and educate local groups in obtaining the maximum health and citizenship values.