The results of the 2015 Little League World Series were determined between August 21 and August 30, 2015, in South Williamsport, Pennsylvania. The tournament was originally scheduled to begin on August 20, however inclement weather resulted in the postponement of all first day games. 16 teams were divided into two groups, one with eight teams from the United States and another with eight international teams, with both groups playing a modified double-elimination tournament. In each group, the last remaining undefeated team faced the last remaining team with one loss, with the winners of those games advancing to play for the Little League World Series championship.