2018 Segunda División play-offs
| Season | 2017–18 |
|---|---|
| Promoted | Valladolid |
| Matches played | 6 |
| Goals scored | 17 (2.83 per match) |
← 2017 2019 → | |
The 2017–18 Segunda División play-offs were played from June 6 to June 17, 2018 and determined the third team which would be promoted to the top division. Teams placed between 3rd and 6th position excluding reserve teams took part in the promotion play-offs.
Valladolid achieved promotion.