Crown of Castile
- Ruling Houses
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House of Burgundy
- Duchies
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Duchy of Alba
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Duchy of Alburquerque
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Duchy of Arjona
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Duchy of Badajoz
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Duchy of Benavente
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Duchy of Cádiz
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Duchy of Galisteo
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Duchy of Medina Sidonia
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Duchy of Molina
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Duchy of Plasencia
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Duchy of Villena
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Duchy of Medinaceli
- Marquisates
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Marquisate of Villafranca del Bierzo
- Counties
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County of Alba de Liste
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County of Benavente
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County of Buelna
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County of Cabra
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County of Cifuentes
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County of Feria
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County of Fuensalida
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County of Lemos
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County of Los Molares
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County of Noreña
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County of Ribadeo
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County of Trastámara
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County of Ureña
- Lordships
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Lordship of Alconchel
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Lordship of Aguilar de Campo
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Lordship of Biscay
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Lordship of Caleruega
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Lordship of Marchena
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Lordship of Moguer
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Lordship of Molina
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Lordship of Sanlúcar
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Lordship of Salas
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Lordship of Valencia de Campos
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Lordship of Valdivia
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Lordship of Villafranca
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Lordship of Villalba de los Barros
- Noble Houses
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House of Alba de Tormes
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House of Álvarez
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House of Caleruega
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House of Castro
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House of De la Cerda Ancient
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House of De la Cerda
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House of Cisneros
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House of Colon
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House of Dávila
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House of De Córdoba
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House of De la Cueva
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House of Enríquez
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House of Figueroa
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House of Galeano
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House of Giron Ancient
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House of Giron
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House of Gotor
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House of De Guzmán
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House of De Haro Ancient
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House of De Haro
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House of Lamuño
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House of Manrique de Lara
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House of Messía
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House of Niño
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House of Pimentel
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House of Ponce de León
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House of Portocarrero
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House of Ribera
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House of Rojas
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House of Salvador
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House of Sandoval
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House of Silva
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House of Sotomayor
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House of Valdivia
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House of Vargas
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House of Velasco
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House of de Villaines
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House of de Villena
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House of Zúñiga
