Marquesses | Titles by Rank
- Marquesses of Castilleja del Campo
- Marquesses of Castillejo
- Marquesses of Castillejos
- Marquesses of Castillo de Aysa
- Marquesses of Castillo de San Felipe
- Marquesses of Castillo del Valle de Sidueña
- Marquesses of Castries
- Marquesses of Castrillo
- Marquesses of Castro
- Marquesses of Castro de Torres
- Marquesses of Castro Serna
- Marquesses of Castrofuerte
- Marquesses of Castromonte
- Marquesses of Castronuevo
- Marquesses of Castropinos
- Marquesses of Catherlough
- Marquesses of Cauche
- Marquesses of Caulaincourt
- Marquesses of Cavalcanti
- Marquesses of Cavour
- Marquesses of Cavour
- Marquesses of Caxias
- Marquesses of Cazaza
- Marquesses of Cea
- Marquesses of Cela
- Marquesses of Cenete
- Marquesses of Centurioni
- Marquesses of Cepagatti
- Marquesses of Cepoy
- Marquesses of Cerchiara
- Marquesses of Cernay
- Marquesses of Cerralbo
- Marquesses of Cerro de la Cabeza
- Marquesses of Cervasca
- Marquesses of Cerverales
- Marquesses of Cerverana
- Marquesses of Ceva
- Marquesses of Chabanais
- Marquesses of Chabannes
- Marquesses of Chabannes de Vergers
- Marquesses of Chabannes La Palice
- Marquesses of Chabannes-Mariol
- Marquesses of Chabrillan
- Marquesses of Chabris
- Marquesses of Chalmazel
- Marquesses of Chamilly
- Marquesses of Champignelles
- Marquesses of Champvallon
- Marquesses of Chandos
- Marquesses of Chantérac