1999–2000 Liga Femenina de Baloncesto

The 1998–99 Liga Femenina de Baloncesto was the 37th edition of Spain's premier championship for women's basketball clubs. Defending champion Celta Vigo defeated CB Islas Canarias in the play-off's final to win its fifth title. CD Ensino and Ros Casares Valencia also reached the play-offs. On the other hand, CB Tres Cantos and Baloncesto Alcalá were relegated as the bottom teams.