Viscounts | Titles by Rank
- Viscounts of Carvalhais
- Viscounts of Carvalhido
- Viscounts of Carvalho
- Viscounts of Carvalho Moreira
- Viscounts of Casa Aguilar
- Viscounts of Casa Blanca
- Viscounts of Casa Branca
- Viscounts of Castanheira de Pera
- Viscounts of Castedo
- Viscounts of Castelbon
- Viscounts of Castelnau
- Viscounts of Castelnoec
- Viscounts of Castelo
- Viscounts of Castelo Alvo
- Viscounts of Castelo Branco
- Viscounts of Castelo Branco-a
- Viscounts of Castelo da Lousã
- Viscounts of Castelo de Borges
- Viscounts of Castelo Novo
- Viscounts of Castelões
- Viscounts of Castilho
- Viscounts of Castillo de Almansa
- Viscounts of Castillo de Tajo
- Viscounts of Castillon
- Viscounts of Castro
- Viscounts of Castro e Sola
- Viscounts of Castro Guedes
- Viscounts of Castro Guidão
- Viscounts of Castro Silva
- Viscounts of Castro-b
- Viscounts of Cauípe
- Viscounts of Cavalcanti
- Viscounts of Cedofeita
- Viscounts of Cercal
- Viscounts of Chabaud la Tour
- Viscounts of Chabert
- Viscounts of Chabot-Tramecourt
- Viscounts of Chalon sur Sâone
- Viscounts of Châlon-sur-Saône
- Viscounts of Champalimaud-Duff
- Viscounts of Chanceleiros
- Viscounts of Chantemerle de Vilette
- Viscounts of Chapt de Rastignac
- Viscounts of Charpin-Feugerolles
- Viscounts of Charruada
- Viscounts of Chartres
- Viscounts of Châteaudun
- Viscounts of Châtellerault
- Viscounts of Chaylane
- Viscounts of Chelva