Marquesses | Titles by Rank
- Marquesses of Cardeñosa
- Marquesses of Carisbrooke
- Marquesses of Carisbrooke
- Marquesses of Carman
- Marquesses of Carmarthen
- Marquesses of Carnarvon
- Marquesses of Caronia
- Marquesses of Carpio
- Marquesses of Carracena
- Marquesses of Carrara
- Marquesses of Carrión de los Céspedes
- Marquesses of Cartagena
- Marquesses of Cartago
- Marquesses of Carvajal
- Marquesses of Casa Alta
- Marquesses of Casa Arizón
- Marquesses of Casa Arnao
- Marquesses of Casa Bermeja
- Marquesses of Casa Boza
- Marquesses of Casa Calvo
- Marquesses of Casa Cháves
- Marquesses of Casa Dávila
- Marquesses of Casa Domecq
- Marquesses of Casa Enrile
- Marquesses of Casa Estrada
- Marquesses of Casa Ferrandel
- Marquesses of Casa Fontanellas
- Marquesses of Casa Fuerte
- Marquesses of Casa Hermosa
- Marquesses of Casa Irujo
- Marquesses of Casa Jiménez
- Marquesses of Casa León
- Marquesses of Casa Loring
- Marquesses of Casa Maury
- Marquesses of Casa Mena y Las Matas
- Marquesses of Casa Montalvo
- Marquesses of Casa Núñez de Villavicencio y Jura Real
- Marquesses of Casa Palacio
- Marquesses of Casa Pavón
- Marquesses of Casa Peñalver
- Marquesses of Casa Pizarro
- Marquesses of Casa Pombo
- Marquesses of Casa Pontejos
- Marquesses of Casa Real da la Moneda
- Marquesses of Casa Real de Córdoba
- Marquesses of Casa Riera
- Marquesses of Casa Saavedra
- Marquesses of Casa Saltillo
- Marquesses of Casa Tabares
- Marquesses of Casa Tamayo