2005 Segunda División B play-offs
The 2005 Segunda División B play-offs were the final playoffs for promotion from 2004–05 Segunda División B to the 2005–06 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.
Teams for 2004/2005 Play-Off
- RSD Alcalá
- SD Ponferradina
- AD Ceuta
- Hércules CF
- Sevilla B
- Zamora CF
- CD Castellón
- Universidad de Las Palmas CF
- Alicante CF
- Rayo Vallecano
- Real Zaragoza B
- Lorca Deportiva CF
- Real Unión
- Burgos CF
- UB Conquense
- Real Madrid B
Eliminatories
First round
Second round
Group A--Second Eliminatory- Home Match
| 18-Jun-2005 | RSD Alcalá | 1-3 | Hercules CF | Stadium:Virgen del Val |
- Away Match
| 26-Jun-2005 | Hercules CF | 1-1 | RSD Alcalá | Stadium:José Rico Pérez |
Promoted to Segunda División: Hércules CF
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Group B--Second Eliminatory
- Home Match
| 19-Jun-2005 | Zamora CF | 2-1 | CD Castellón | Stadium:Ruta de la Plata |
- Away Match
| 26-Jun-2005 | CD Castellón | 1-0 | Zamora CF | Stadium:Nou Castalia |
Promoted to Segunda División: CD Castellón
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Group C--Second Eliminatory
- Home Match
| 19-Jun-2005 | Lorca CF | 1-2 | Real Unión | Stadium:Francisco Artes Carrasco |
- Away Match
| 26-Jun-2005 | Real Unión | 1-3 | Lorca FC | Stadium:Stadium Gal |
Promoted to Segunda División: Lorca Deportiva CF
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Group D--Second Eliminatory
- Home Match
| 18-Jun-2005 | UB Conquense | 0-2 | Real Madrid B | Stadium:La Fuensanta |
- Away Match
| 26-Jun-2005 | Real Madrid B | 0-1 | UB Conquense | Stadium:Santiago Bernabeu |
Promoted to Segunda División: Real Madrid B