Troyes 10000 - Champagne-Ardenne
- Carougeat
- Caroujat
- Carrasco
- Carreau
- Carrut
- Carton
- Caseiro
- Cassavia
- Cassis
- Castro
- Catherine
- Catteau
- Cavalleri
- Cazenave
- Cazier
- Cedelle
- Ceder
- Celerier
- Cerpolini
- Cery
- Chabrier
- Chaffaut
- Chala-vicentini
- Chalicarne
- Chambellant
- Chambrillon
- Champonnois
- Chandellier
- Chaouche
- Chapot
- Chappat
- Chapput
- Chapuis
- Chardinal
- Charlet
- Charvaux
- Chaton
- Chauvier
- Chavigny
- Chayeb
- Chaysinh
- Chazelon
- Chefiare
- Cherain
- Chery
- Chesnin
- Chevrier
- Chibane
- Chicco
- Chinon
- Choisy
- Chollet
- Chollier
- Chomez
- Chominot
- Chossemier
- Chougny
- Christine
- Christmann
- Chung
- Cian
- Ciesla
- Cirillo
- Clarenn
- Clausse
- Clerc
- Clerget
- Clerici
- Clevy
- Cocard
- Cochard
- Coco
- Colbois
- Colle
- Collombet
- Colombo
- Colot
- Compagno
- Comte
- Conat
- Connegan
- Controle
- Copain
- Copin
- Coquet
- Cornevin
- Cornez
- Coronil
- Corre
- Correia
- Corzelius
- Cothenet
- Cottereau
- Cottin
- Cottray
- Cottret
- Couchy
- Couderc
- Couesnon
- Couillard