The Segunda División B 2005–06 season was the 75th since its establishment. The first matches of the season were played on 28 August 2005, and the season ended on 28 May 2006 with the promotion play-off finals.
Teams of Madrid, Galicia, Balearic Islands, Canary Islands and Melilla.Scores and Classification - Group 1Liguilla de Ascenso:Alcalá - Eliminated in the Second RoundRayo Vallecano - Eliminated in the First RoundReal Madrid B - Promoted to the Second DivisionUniversidad de Las Palmas - Eliminated in the First RoundPromoted to This Group From Tercera División:Móstoles - Founded in: 1955//, Based in: Móstoles, Madrid//, Promoted from: Group 7San Isidro - Founded in: 1970//, Based in: San Isidro, Canary Islands//, Promoted from: Group 12Relegated to This Group From Segunda División:Pontevedra - Founded in: 1941//, Based in: Pontevedra, Galicia//, Relegated From: Segunda DivisiónRelegated to Tercera División:Arteixo - Founded in: 1949//, Based in: Arteixo, Galicia//, Relegated to: Group 1Fuerteventura - Founded in: 2004//, Based in: Puerto del Rosario, Canary Islands//, Relegated to: Group 12Navalcarnero - Founded in: 1961//, Based in: Navalcarnero, Madrid//, Relegated to: Group 7Mallorca B - Founded in: 1983//, Based in: Palma de Mallorca, Balearic Islands//, Relegated to: Group 11Pld = Matches played; W = Matches won; D = Matches drawn; L = Matches lost; GF = Goals for; GA = Goals against; GD = Goal difference; Pts = Points; (C) = Champion; (R) = Relegated; (P) = Play off; (O) = Promoted through playoff
Rules for classification: 1st points; 2nd head-to-head; 3rd goal difference; 4th goals scored
Teams of Basque Country, Castile and León, Cantabria and Asturias.Scores and Classification - Group 2Liguilla de Ascenso:Zamora - Eliminated on Second EliminatoryPonferradina - Eliminated on First EliminatoryBurgos - Eliminated on First EliminatoryReal Unión - Eliminated on Second EliminatoryPromoted to This Group From Tercera División:Oviedo - Founded in: 1926//, Based in: Oviedo, Asturias//, Promoted from: Group 2Real Valladolid B - Founded in: 1944//, Based in: Valladolid, Castile and León//, Promoted from: Group 8Portugalete - Founded in: 1944//, Based in: Portugalete, Basque Country //, Promoted from: Group 4Durango - Founded in: 1919//, Based in: Durango, Basque Country//, Promoted from: Group 4Zalla - Founded in: 1925//, Based in: Zalla, Basque Country//, Promoted from: Group 4Racing Santander B - Founded in: 1926//, Based in: Santander, Cantabria//, Promoted from: Group 3Relegated to This Group From Segunda División:Salamanca - Founded in: 1923//, Based in: Salamanca, Castile and León//, Relegated from: Segunda DivisiónRelegated to Tercera División:Mirandes - Founded in: 1927//, Based in: Miranda de Ebro, Castile and León//, Relegated to: Group 8Guijuelo - Founded in: 1974//, Based in: Guijuelo, Castile and León//, Relegated to: Group 8Sestao - Founded in: 1996//, Based in: Sestao, Basque Country//, Relegated to: Group 4Gimnástica - Founded in: 1907//, Based in: Torrelavega, Cantabria//, Relegated to: Group 3Haro - Founded in: 1914//, Based in: Haro, La Rioja//, Relegated to: Group 16Pld = Matches played; W = Matches won; D = Matches drawn; L = Matches lost; GF = Goals for; GA = Goals against; GD = Goal difference; Pts = Points; (C) = Champion; (R) = Relegated; (P) = Play off; (O) = Promoted through playoff
Rules for classification: 1st points; 2nd head-to-head; 3rd goal difference; 4th goals scored
Teams of Catalonia, Navarre, Valencian Community and Aragon.Scores and Classification - Group 3Liguilla de Ascenso:Alicante - Eliminated on First EliminatoryHércules - Promoted to Second DivisionZaragoza B - Eliminated on First EliminatoryCastellón - Promoted to Second DivisionPromoted to This Group From Tercera División:Sant Andreu - Founded in: 1907//, Based in: Barcelona, Catalonia//, Promoted from: Group 5L´Hospitalet - Founded in: 1957//, Based in: L'Hospitalet de Llobregat, Catalonia//, Promoted from: Group 5Reus - Founded in: 1909//, Based in: Reus, Catalonia //, Promoted from: Group 5Relegated to This Group From Segunda División:Terrassa - Founded in: 1906//, Based in: Terrassa, Catalonia//, Relegated From: Segunda DivisiónRelegated to Tercera División:Peña Sport - Founded in: 1925//, Based in: Tafalla, Navarre//, Relegated to: Group 15Novelda - Founded in: 1925//, Based in: Novelda, Valencian Community//, Relegated to: Group 6RCD Espanyol B - Founded in: 1994//, Based in: Barcelona, Catalonia//, Relegated to: Group 5Girona - Founded in: 1929//, Based in: Girona, Catalonia//, Relegated to: Group 5Pld = Matches played; W = Matches won; D = Matches drawn; L = Matches lost; GF = Goals for; GA = Goals against; GD = Goal difference; Pts = Points; (C) = Champion; (R) = Relegated; (P) = Play off; (O) = Promoted through playoff
Rules for classification: 1st points; 2nd head-to-head; 3rd goal difference; 4th goals scored
Teams of Andalusia, Extremadura, Castile La Mancha, Ceuta and Murcia.Scores and Classification - Group 4Liguilla de Ascenso:Sevilla B - Eliminated on First EliminatoryConquense - Eliminated in Second EliminatoryCeuta - Eliminated on First EliminatoryLorca - Promoted to Second DivisionPromoted to This Group From Tercera División:Baza - Founded in: 1970//, Based in: Baza, Andalusia//, Promoted from: Group 9Villanueva - Founded in: 1951//, Based in: Villanueva de Córdoba, Andalusia//, Promoted from: Group 10Mérida - Founded in: 1990//, Based in: Mérida, Extremadura //, Promoted from: Group 14Águilas - Founded in: 1925//, Based in: Aguilas, Murcia //, Promoted from: Group 13Almansa - Founded in: 1992//, Based in: Almansa, Castile La Mancha //, Promoted from: Group 18Relegated to This Group From Segunda División:Córdoba - Founded in: 1954//, Based in: Córdoba, Andalusia//, Relegated From: Second DivisionRelegated to Tercera División:Arenas - Founded in: 1931//, Based in: Armilla, Andalusia//, Relegated to: Group IXDon Benito - Founded in: 1928//, Based in: Don Benito, Extremadura//, Relegated to: Group XIVJerez - Founded in: 1969//, Based in: Jerez de los Caballeros, Extremadura//, Relegated to: Group XIVTomelloso - Founded in: 1979//, Based in: Tomelloso, Castile La Mancha//, Relegated to: Group XVIIPld = Matches played; W = Matches won; D = Matches drawn; L = Matches lost; GF = Goals for; GA = Goals against; GD = Goal difference; Pts = Points; (C) = Champion; (R) = Relegated; (P) = Play off; (O) = Promoted through playoff
Rules for classification: 1st points; 2nd head-to-head; 3rd goal difference; 4th goals scored