Marquesses | Titles by Rank
- Marquesses of Calitri
- Marquesses of Callus
- Marquesses of Caltójar
- Marquesses of Caluso
- Marquesses of Calvisson
- Marquesses of Camachos
- Marquesses of Camarasa
- Marquesses of Camarena La Real
- Marquesses of Camarena la Vieja
- Marquesses of Camarines
- Marquesses of Camarra
- Marquesses of Cambil
- Marquesses of Cambridge
- Marquesses of Campillo de Murcia
- Marquesses of Campo Ameno
- Marquesses of Campo de Aras
- Marquesses of Campo Fertil
- Marquesses of Campo Florido
- Marquesses of Campo Fuerte
- Marquesses of Campo Hermoso
- Marquesses of Campo Maior
- Marquesses of Campo Nuevo
- Marquesses of Campo Real
- Marquesses of Campo Real-I
- Marquesses of Campo Sagrado
- Marquesses of Campo Salinas
- Marquesses of Campofertil
- Marquesses of Campollano
- Marquesses of Campomarino
- Marquesses of Campoo
- Marquesses of Campotéjar
- Marquesses of Campotino
- Marquesses of Campsart
- Marquesses of Canales de Chozas
- Marquesses of Canero
- Marquesses of Cañete
- Marquesses of Canillac
- Marquesses of Canillejas
- Marquesses of Canisy
- Marquesses of Cañizar
- Marquesses of Cantagalo
- Marquesses of Capendu
- Marquesses of Capriglia
- Marquesses of Caracena del Valle
- Marquesses of Caraglio
- Marquesses of Caraman
- Marquesses of Caravaggio
- Marquesses of Caravaggio
- Marquesses of Caravelas
- Marquesses of Cárdenas de Monte Hermoso