Troyes 10000 - Champagne-Ardenne
- Carougeat
- Caroujat
- Carrasco
- Carreau
- Carrut
- Carton
- Casari
- Cassavia
- Cassis
- Castor
- Castro
- Catherine
- Catteau
- Ceder
- Cerone
- Cerpolini
- Cery
- Chabrier
- Chala-vicentini
- Chalicarne
- Chambellant
- Chambrillon
- Chameroy
- Champonnois
- Chantal
- Chaouachi
- Chaouche
- Chaoui
- Chapot
- Chapput
- Chapuis
- Chardin
- Chardinal
- Charlier
- Charonnat
- Charvaux
- Chassagne
- Chatenet
- Chaton
- Chauvier
- Chavarot
- Chavigny
- Chefiare
- Chegdali
- Cheneau
- Cherain
- Cherifi
- Chesnin
- Chevallier
- Chevallot
- Chevrier
- Chicco
- Chillet
- Chinon
- Choisy
- Chollier
- Chomez
- Chominot
- Chossemier
- Chouaref
- Chougrani
- Christine
- Christmann
- Chung
- Cian
- Cirillo
- Clarenn
- Clausse
- Clauteaux
- Clerget
- Clerici
- Clevy
- Cliquot
- Clochette
- Clorate
- Cochard
- Cochin
- Coco
- Coelho
- Cola
- Colbois
- Collombet
- Colombo
- Colot
- Coltel
- Compagno
- Comte
- Conan
- Conat
- Connegan
- Connégan
- Controle
- Coradin
- Cornet
- Cornevin
- Cornez
- Corre
- Correia
- Cortes
- Corzelius