The Junior League World Series is a baseball tournament for children aged 12, 13, and 14 years old.

Each of them brings baseball or softball teams from around the world together in one of four age divisions.

Prior to 2000, the Mexico and Puerto Rico regions each received automatic berths into the tournament.

Starting in 2004, the Mexico Region now receives an automatic berth to the tournament in even-numbered years, while the Puerto Rico Region receives an automatic berth in odd-numbered years.

In 2018, the Host Team was brought back to the tournament as the sixth United States region.