2013 Tercera División play-offs

The 2013 Tercera División play-offs to Segunda División B from Tercera División (Promotion play-offs) were the final playoffs for the promotion from 2012–13 Tercera División to 2013–14 Segunda División B. The first four teams in each group (excluding reserve teams) took part in the play-off.

Format
The eighteen group winners have the opportunity to be promoted directly to Segunda División B. The eighteen group winners were drawn into a two-legged series where the nine winners will promote to Segunda División B. The nine losing clubs will enter the play-off round for the last nine promotion spots.

The eighteen runners-up were drawn against one of the seventeen fourth-placed clubs outside their group and the eighteen third-placed clubs were drawn against one another in a two-legged series. The twenty-seven winners will advance with the nine losing clubs from the champions' series to determine the eighteen teams that will enter the last two-legged series for the last nine promotion spots. In all the playoff series, the lower-ranked club play at home first. Whenever there is a tie in position (e.g. like the group winners in the champions' series or the third-placed teams in the first round), a draw determines the club to play at home first.

Qualified teams
The draw took place in the RFEF headquarters, in Las Rozas (Madrid), on 20 May 2013, 17:00 CEST.

Matches
The aggregate winners will be promoted to Segunda División B. The aggregate losers will advance to the Non-champions promotion play-off Second Round.
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Qualified teams
The draw took place in the RFEF headquarters, in Las Rozas (Madrid), on 20 May 2013, 17:00 CEST.

Matches

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The aggregate winners will advance to the Non-champions promotion play-off Second Round.

Qualified teams
The draw was held in the RFEF headquarters, in Las Rozas (Madrid), on 3 June 2013, 17:30 CEST.

Matches
The aggregate winners will advance to the Non-champions promotion play-off Third Round.
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Qualified teams
The draw was held in the RFEF headquarters, in Las Rozas (Madrid), on 17 June 2013, 16:45 CEST.

Matches
The aggregate winners will be promoted to Segunda División B.
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