The 2018 Liga Sudamericana de Básquetbol (South American Basketball League) was the 23rd edition of the second-tier level continental professional club basketball competition in the Americas, the FIBA Americas League. Sixteen teams from South America competed over three rounds to determine the champion. The defending champions, Guaros de Lara, did not have the opportunity to defend their title, after the Venezuelan Basketball Federation failed to register the team in the competition, alleging financial troubles. Franca of Brazil won their first Liga Sudamericana de Básquetbol championship in team history by beating Instituto of Argentina.