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