Princes | Titles by Rank
- Princes of Cantacroce
- Princes of Cantalupo
- Princes of Capua
- Princes of Caraman
- Princes of Caraman-Chimay
- Princes of Caramanico
- Princes of Carbognano
- Princes of Carency
- Princes of Cariati
- Princes of Cariatti
- Princes of Carignano
- Princes of Carolath-Beuthen
- Princes of Carrara
- Princes of Caserta
- Princes of Cassano
- Princes of Cassaro
- Princes of Castagneto
- Princes of Castel Viscardo
- Princes of Castelbuono
- Princes of Castelcicala
- Princes of Castelferrato
- Princes of Castelfranco
- Princes of Castell-Castell
- Princes of Castell-Rüdenhausen
- Princes of Castelnuovo
- Princes of Castelvetrano
- Princes of Castelviscardo
- Princes of Castglione
- Princes of Castiglione
- Princes of Castrora
- Princes of Catena
- Princes of Cellamare
- Princes of Cellmare
- Princes of Centola
- Princes of Cerveteri
- Princes of Chabanais
- Princes of Chalais
- Princes of Chimay
- Princes of Chipre
- Princes of Cisterna e Belriguardo
- Princes of Civitella-Cesi
- Princes of Clanaboy
- Princes of Clannaboy
- Princes of Clary and Aldringen
- Princes of Coligny
- Princes of Collalto e San Salvatore
- Princes of Colloredo
- Princes of Colubrano
- Princes of Combret
- Princes of Conca