A total of eight men's teams and eight women's teams qualified to compete at the games in the five-a-side tournaments. For the men's event, the top seven teams at the 2017 FIBA AmeriCup, have qualified to compete. In the women's event, the Olympic Champions the United States, have qualified to compete as well as the top six nations at the 2017 FIBA Women's AmeriCup. This is a new system of qualification implemented by FIBA Americas. For each 3x3 tournament, the top five teams in each gender in the world rankings as of November 1, 2018 qualified. Host nation Peru was barred from participating by FIBA, following sanctions imposed on the Peruvian Basketball Federation.