| Tourney Name: | Big League World Series |
| Year: | 2015 |
| Country: | United States |
| Num Teams: | 11 |
| Champion Other: |  Guayama, Puerto Rico |
| Second Other: | Thousand Oaks, California |
| Prevseason: | 2014 |
| Nextseason: | 2016 |
The 2015 Big League World Series took place from July 28 - August 4 in Easley, South Carolina, United States. Guayama, Puerto Rico defeated Thousand Oaks, California in the championship game.
A modified double-elimination format was introduced this year.
| United States | International |
|---|---|
| Easley, South Carolina District 1 Host | Taichung City, Taiwan Taichung City Asia–Pacific |
| Grand Rapids, Michigan District 9 Central |  Calgary, AlbertaDistrict 8 Canada |
| Dover, Delaware District East | Rotterdam, Netherlands District 1 Europe–Africa |
| Dunedin, Florida District 12 Southeast | Guayama, Puerto Rico District 13 Latin America |
| Garland, Texas South Garland Southwest |  San Nicolás, MexicoLas Puentes Mexico |
| Thousand Oaks, California District 13 West | |
United States Bracket
International Bracket
Consolation round
Elimination Round