The FIBA U18 Women's AmeriCup, previously known as the FIBA Under-18 Women's Americas Championship, is the Americas basketball championship for women's under-18 national teams that takes place every two years in the FIBA Americas zone.
Before the 2004 edition, the tournament was played by under-19 teams. The top four finishers qualify for the FIBA Under-19 Women's Basketball World Cup.
USA and Canada are the only teams that participate in the Under-18 Women's AmeriCup without playing qualifiers. The top three teams from the Under-17 Women's Centrobasket along with the top three teams from the Under-17 Women's South American Championship qualify for this event.