The 2023 Liga Sudamericana de Básquetbol, or 2023 FIBA South American Basketball League, was the 26th season of the Liga Sudamericana de Básquetbol (LSB), the second tier of basketball in South America organised by FIBA Americas.

The season began 13 October and ended on 3 December 2023 with the Grand Final.

Instituto won its first LSB championship after defeating Titanes de Barranquilla in the Grand Final.

The six teams that advanced from the group stage were be paired according to their records, all matches were played in Montevideo, Uruguay.

[3] [4] All times are local (GMT-3) The winners of the individual awards were announced after the Grand Final on 3 December.