| Competition: | La Liga |
| Season: | 1998–99 |
| Dates: | 29 August 1998 – 20 June 1999 |
| Winners: | Barcelona 16th title |
| Relegated: | Extremadura (relegation playoff) Villarreal (relegation playoff) Tenerife Salamanca |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Barcelona Real Madrid Mallorca Valencia |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Celta Vigo Deportivo La Coruña Atlético Madrid (as Copa del Rey runners-up) |
| Continentalcup3: | Intertoto Cup |
| Continentalcup3 Qualifiers: | Espanyol |
| League Topscorer: | Raúl (25 goals) |
| Biggest Home Win: | Barcelona 7–1 Alavés (3 January 1999)[1] |
| Biggest Away Win: | Extremadura 1–5 Real Madrid (31 October 1998)[2] |
| Highest Scoring: | Barcelona 7–1 Alavés (3 January 1999) Celta Vigo 6–2 Oviedo (3 January 1999)[3] Athletic Bilbao 3–5 Oviedo (15 November 1998)[4] |
| Matches: | 380 |
| Total Goals: | 1003 |
| Prevseason: | 1997–98 |
| Nextseason: | 1999–2000 |
The 1998–99 La Liga season was the 68th since its establishment. It began on 29 August 1998, and concluded on 20 June 1999.
Twenty teams competed in the league – the top seventeen teams from the previous season and the three teams promoted from the Segunda División. The promoted teams were Alavés (playing top flight football for the first time in forty two years), Extremadura (returning after a one-year absence) and Villarreal (playing in the top flight for the first time ever). They replaced Compostela, Mérida and Sporting Gijón after spending time in the top flight for four, one and twenty one years respectively.
1998–99 season was composed of the following clubs:
| Team | Stadium | Capacity | |
|---|---|---|---|
| 98,772 | |||
| 80,354 | |||
| 55,926 | |||
| 55,005 | |||
| 55,000 | |||
| 52,132 | |||
| 39,750 | |||
| 34,600 | |||
| 34,596 | |||
| 32,500 | |||
| 32,200 | |||
| 27,846 | |||
| 22,824 | |||
| 22,222 | |||
| 22,000 | |||
| 19,840 | |||
| 18,000 | |||
| 17,341 | |||
| 16,500 | |||
| 11,580 |
The Pichichi Trophy is awarded to the player who scores the most goals in a season.
The Ricardo Zamora Trophy is awarded to the goalkeeper with the lowest ratio of goals conceded to matches played.
| Rank | Player | Club | Goals against | Matches | Average | |
|---|---|---|---|---|---|---|
| 1 |  Carlos Roa | Mallorca | 29 | 35 | ||
| 2 |  Toni | Espanyol | 38 | 38 | ||
| 3 | Santiago Cañizares | Valencia | 39 | 38 | ||
| 4 |  Richard Dutruel | Celta Vigo | 39 | 37 | ||
| 5 |  Jacques Songo'o | Deportivo La Coruña | 40 | 37 | ||
| 6 | César | Valladolid | 42 | 38 | ||
| Imanol Etxeberria | Athletic Bilbao | 41 | 37 | |||
| Alberto López | Real Sociedad | 41 | 37 | |||
| 9 | Ruud Hesp | Barcelona | 42 | 37 | ||
| 10 |  Ronny Gaspercic | Extremadura | 37 | 31 |
From this season, RFEF develops and publishes annually the Fair Play classification according to the Points System which was agreed by the board of the federation on 30 October 1998 and later expanded and fixed at another meeting and published in the 2nd Mailshot of the 2000–01 season. The classification for this season was computed from the Second legg, in order to experience results.
| Rank | Club | width=50px | Points |
|---|---|---|---|
| 1 | Extremadura | 38 | |
| 2 | 45 | ||
| 3 | 48 |
Atlético Madrid and Valencia supporters[6]
