The 2013–14 ACB season is the 31st season of the Spanish basketball league Liga ACB, also called Liga Endesa in its sponsored identity.

The regular season began on October 12, 2013, and ended on May 25, 2014.

FC Barcelona won their 18th league title.

Lagun Aro GBC and La Bruixa d'Or remained in Liga ACB after Ford Burgos and Lucentum Alicante failed to meet requirements for joining the league.

Attendances include playoff games: Updated to games played on 26 June 2014Source: Liga ACBNotes:1: Tuenti Móvil Estudiantes played one game at Pabellón Jorge Garbajosa, in Torrejón de Ardoz.2: Herbalife Gran Canaria played in Centro Insular de Deportes until the round 26 (14 games).