The 1998–99 Liga Femenina de Baloncesto was the 36th edition of Spain's premier championship for women's basketball clubs. It marked the competition's expansion from 12 to 14 teams.[1] Celta de Vigo defeated CB Halcón Avenida in the play-offs' final to win its fourth title 17 years later.[2] CD Ensino and CB Sandra Islas Canarias were the regular stage's champion and runner-up respectively, also qualifying for the championship play-offs. On the other hand, CB Navarra and Canal Isabel II CD were relegated as the two bottom teams.[3]
| Autonomous community | Teams |
|---|---|
| 3: CD Ensino, Simeón Celta, Grupo 10 Cortegada | |
| 3: Real Canoe, Femenino Tres Cantos, Canal Isabel II | |
| 2: Halcón Avenida, Ciudad de Burgos | |
| 1: Cajasur Linares | |
| 1: Universidad de Oviedo | |
| 1: Universitari Barcelona | |
| 1: Popular Godella | |
| 1: Sandra Islas Canarias | |
| 1: CB Navarra | |
| width=20 |
| width=200 | Teams ! | width=20 | ! | width=20 | ! | width=20 | ! | width=35 | ! | width=35 | ! | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 26 | 22 | 4 | 1929 | 1605 | 6 | Qualified for the play-offs | ||||||||
| 2 | 26 | 22 | 4 | 2023 | 1607 | 2 | Qualified for the play-offs | ||||||||
| 3 | 26 | 21 | 5 | 1957 | 1398 | 1 | Qualified for the play-offs | ||||||||
| 4 | 26 | 19 | 7 | 2054 | 1817 | 2 | Qualified for the play-offs | ||||||||
| 5 | 26 | 18 | 8 | 1943 | 1707 | 6 | |||||||||
| 6 | 26 | 17 | 9 | 1681 | 1648 | 2 | |||||||||
| 7 | 26 | 12 | 14 | 1832 | 1893 | ||||||||||
| 8 | 26 | 11 | 15 | 1755 | 1814 | 1 | |||||||||
| 9 | 26 | 11 | 15 | 1867 | 1844 | 6 | |||||||||
| 10 | 26 | 8 | 18 | 1653 | 1791 | ||||||||||
| 11 | 26 | 8 | 18 | 1568 | 1743 | 6 | |||||||||
| 12 | 26 | 6 | 20 | 1555 | 1883 | ||||||||||
| 13 | 26 | 6 | 20 | 1552 | 1798 | 3 | Relegated to 1ª División | ||||||||
| 14 | 26 | 1 | 25 | 1386 | 2207 | Relegated to 1ª División | |||||||||
| width=240 | Team #1 | width=20 | Agg. | width=240 | Team #2 | width=70 | 1st leg | width=70 | 2nd leg | width=70 | 3rd leg* |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Halcón Avenida | 2 – 1 | 94 – 81 | 59 – 70 | 78 – 71 | |||||||
| Simeón Celta | 2 – 1 | 87 – 50 | 30 – 54 | 64 – 60 | |||||||
| width=240 | Team #1 | width=20 | Agg. | width=240 | Team #2 | width=70 | 1st leg | width=70 | 2nd leg | width=70 | 3rd leg* |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 – 2 | Simeón Celta | 58 – 69 | 51 – 64 | ||||||||