Blois 41000 - Centre
- Cadoret
- Cage
- Caillaud
- Cailliere
- Cakmak
- Callu
- Capicchioni
- Carbonnel
- Carpentier
- Carreau
- Carré
- Casanova
- Casas
- Casteran
- Cateau
- Catherinot
- Cave
- Cavier
- Cayuela
- Celebi
- Cellier
- Cerdeira
- Cerensky
- Ceyhan
- Chabert
- Chabrol
- Chahat Bais
- Chahmat
- Chailleux
- Chalmel
- Chalons
- Chambon
- Chan
- Chanel
- Chanez
- Charifi
- Charron
- Charrour
- Chartier
- Chartrain
- Chatelain
- Chaussade
- Chaussepied
- Chauvet
- Chemma
- Chenneveau
- Cherbonnier
- Cheron
- Cherrier
- Chesne
- Chignard
- Chigot
- Chiguer
- Chipault
- Chirol
- Cholet
- Cholley
- Chopard
- Choquet
- Chouai
- Chouaib
- Christine
- Chrétien
- Ciret
- Cissokho
- Cissoko
- Clairembault
- Clavier
- Clerc
- Clochard
- Cocatrix
- Colombier
- Colonna
- Combémorel
- Common
- Communeau
- Conte
- Copois
- Coquart
- Coquatrix
- Coquelet
- Corbiere
- Corbin
- Cordier
- Cornet
- Cornilleau
- Corona
- Cotereau
- Cottin
- Cottron
- Coucy
- Couderc
- Couillard
- Coulombeau
- Couradjut
- Courant
- Courault
- Courcelles
- Creche
- Crespeau