The 2014–15 Liga Nacional de Básquet season was the 31st season of the top professional basketball league in Argentina.

The regular season started on 29 September 2014 and the defending champions were Peñarol.

Quimsa won their first title, defeating Gimnasia Indalo in the finals.

Torneo Nacional de Ascenso Champions from the previous season San Martín de Corrientes and runners-up Ciclista Juninense were promoted.

As in the previous season, there were no relegations in this tournament.