2018–19 Liga Femenina de Baloncesto

Liga Dia1
Season2018–19
Games played182 (Regular season)
16 (Playoffs)
Teams14
TV partner(s)Teledeporte
Canal FEB (streaming)
Regular season
RelegatedSnatt's Femení Sant Adrià
Baxi Ferrol
Finals
ChampionsSpar CityLift Girona
(2nd title)
Runners-upPerfumerías Avenida
SemifinalistsCadí La Seu
Valencia Basket
Statistical leaders
Points Ariel Edwards 17.73
Rebounds Mariam Coulibaly 10.88
Assists Anna Gómez 6.12
Index Rating Mariam Coulibaly 17.04
1 Sponsored league name, referring to Dia.

The 2018–19 Liga Femenina de Baloncesto, also known as Liga Dia for sponsorship reasons, is the 56th season of the Spanish basketball women's league. Regular season will start on 13 October 2018 with the first matchday of the regular season and it will end on 7 April 2019 with the 26th matchday. The playoffs (quarter-finals, semi-finals and final) will be held between 10 April and 5/9 May 2019.

The 2019 Spanish Cup will return to the Final Eight format, not used since 2009. It will be played between 28 February and 3 March 2019, featuring the top seven teams of the league after the 13th matchday on December 30, which will join the host.