2024 Tercera Federación play-offs

The 2024 Tercera Federación play-offs to Segunda Federación from Tercera Federación (promotion play-offs) are the final play-offs for the promotion from 2023–24 Tercera Federación to 2024–25 Segunda Federación.

Format
Group champions will be promoted directly to the Segunda Federación. Due to the remodeling of the RFEF leagues, as of 2021–22 season the promotion play-off is divided into two stages: regional and national. Four teams from each group participate in the regional stage, which were classified between places second and fifth of the regular season. Since 2022–23 season the regional stage is a series of two matches. The second classified will face the fifth classified; and the third will do the same with the fourth. The winners of the two series will play a series to determine the team that will qualify for the national stage.

In the regional phase, if the aggregated score ends in a draw, extra time will be played, if the same result is maintained at the end of extra time, the best seeded team will win.

The national stage will be played by 18 teams, which won their respective regional play-offs. Since 2022–23 season nine different series will be played to determine the winners of the promotion to Segunda Federación.

As 2022–23 season, the RFEF recovered the two-legged knockout system, due to the complaints filed against the single knockout system at a neutral venue that had been implemented after COVID-19 and the subsequent reform of the football leagues organized by the RFEF.

Qualified teams

 * Teams in bold promoted to the Segunda Federación
 * Teams in italics progressed to the national stage

Group 1 – Galicia

 * '''Group champions: Bergantiños

Group 2 – Asturias

 * Group champions: Llanera

Group 3 – Cantabria

 * Group champions: Escobedo

Group 4 – Basque Country

 * Group champions: Vitoria

Group 5 – Catalonia

 * Group champions: Olot

Group 6 – Valencian Community

 * Group champions: Elche Ilicitano

Group 7 – Community of Madrid

 * Group champions: Real Madrid C

Group 8 – Castile and León

 * Group champions: Ávila

Group 9 – Eastern Andalusia

 * Group champions: Juventud Torremolinos

Group 10 – Western Andalusia

 * Group champions: Xerez

Group 11 – Balearic Islands

 * Group champions: Ibiza Islas Pitiusas

Group 12 – Canary Islands

 * Group champions: Tenerife B

Group 13 – Region of Murcia

 * Group champions: Minera

Group 14 – Extremadura

 * Group champions: Don Benito

Group 15 – Navarre

 * Group champions: Subiza

Group 16 – La Rioja

 * Group champions: UD Logroñés B, however, Alfaro occupied the direct promotion slot due to UD Logroñés' participation in 2024–25 Segunda Federación

Group 17 – Aragon

 * Group champions: Ejea

Group 18 – Castilla–La Mancha

 * Group champions: Conquense

Qualified teams
Bold indicates teams that were promoted

Matches

 * First leg


 * Second leg

Promoted teams

 * The 18 teams that were promoted through regular season groups are included.
 * The numbers of years after the last promotion are referred to the last participation of the club in Segunda División B or Segunda Federación if the team was relegated one or two years ago.