La Liga play-offs
| Region |
 Spain
|
|---|---|
| Number of teams | 4 |
 2017 play-offs
|
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The La Liga play-offs are an annual series of football matches to determine the final promotion places within Segunda División and La Liga. In its current format, it involves the four teams that finish directly below the automatic promotion places from Segunda División to the top tier. These teams meet in a series of play-off matches to determine the final team that will be promoted. Reserve teams are not eligible for promotion.
The play-offs were first introduced in 1929 and have been staged at the conclusion of every season since. Until 1999, it consisted in games between teams from both leagues, but when it was reinstated, it only involved four teams from Segunda División.
The first edition of La Liga and Segunda División finished with a promotion/relegation playoff between the champion of Segunda División and the last qualified team of La Liga. It was played with a double-leg format and Racing Santander remained in the top tier.
In 1934, the Segunda División was expanded into three groups of 10 teams. The two first qualified teams of each group would play a final stage with a round-robin format. The two top teams, promoted to La Liga.
Just after the Spanish Civil War, the 1939–40 Segunda División was expanded into five groups where the winners joined the final stage. The champion promoted directly while the runner-up played a single-game to promote to La Liga.
In the next season, the Segunda División was reduced to two groups of 12 teams where the two top teams joined a final group. In this one, the winner and the runner-up promoted directly while the 3rd and 4th qualified played against the two last qualified teams in La Liga. The two winners achieved the spot for the top tier's next season. From 1945 (one year after the reduction of Segunda División to one only group) to 1947, there was only one promotion/relegation game.
All games were played in a neutral venue.
For the leagues of the 1950s, when the Segunda División was divided into two groups, a new promotion/relegation system was created. The second and third qualified of each group and the 13th and 14th of La Liga, played by 16 teams, joined a round-robin group where the two top teams would promote to the next La Liga season.
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