2012 Segunda División B play-offs

The 2012 Segunda División B play-offs (Playoffs de Ascenso or Promoción de Ascenso) were the final playoffs for promotion from 2011–12 Segunda División B to the 2012–13 Segunda División. The four first placed teams in each of the four Segunda División B groups played the Playoffs de Ascenso and the four last placed teams in Segunda División were relegated to Segunda División B. It also decided the two teams which placed 16th to be relegated to the 2012–13 Tercera División.

Qualified teams
The draw was held in the RFEF headquarters, in Las Rozas (Madrid), on 14 May 2012, 16:30 CEST.

Semifinals
The aggregate winners were promoted and qualified to the 2011–12 Segunda División B Final. The aggregate losers were relegated to the Non-champions promotion play-off Second Round.
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Final

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Qualified teams
The draw took place in the RFEF headquarters, in Las Rozas (Madrid), on 14 May 2012, 16:30 CEST.

Matches

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Qualified teams
The draw was held in the RFEF headquarters, in Las Rozas (Madrid), on 28 May 2012, 17:00 CEST.

Matches

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Qualified teams
The draw was held in the RFEF headquarters, in Las Rozas (Madrid), on 11 June 2012, 17:00 CEST.

Matches

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Qualified teams
The draw was held in the RFEF headquarters, in Las Rozas (Madrid), on 14 May 2012, 16:30 CEST.

Matches

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