The 2008–09 FIBA Americas League was the second edition of the first-tier and most important professional international club basketball competition in the regions of South America, Central America, the Caribbean, and Mexico, with the winner of the competition being crowned as the best team and champion of all of those regions.

The first stage was a round robin phase, with four teams in each group.

Each of the groups were played in different cities, (Arecibo, Mar del Plata, Sunchales, and Xalapa).

The first team from each group advanced to the Final 4 round-robin stage that took place in the city of Xalapa, Mexico.

The labels in the brackets show how each team qualified for the place of its starting round (TH: Americas League title holders, LSH: Liga Sudamerican title holders): Minas Tênis Clube advanced due to a better goal average.