Paris - Île-de-France
- Cosio
- Coslin
- Cosmidis
- Cossic
- Costache
- Costadoat
- Costanzi
- Costecalde
- Costenoble
- Costil
- Cotigny
- Cottaris
- Cotteau
- Cottenceau
- Cotteret
- Cottias
- Cottineau
- Cottret
- Couanau
- Coubray
- Coucharriere
- Coucheney
- Couchot
- Couchoud
- Couchouron
- Coude Du Foresto
- Coudene
- Couderette
- Coudiere
- Coudouel
- Coudriou
- Coudé
- Couenon
- Couetoux
- Couffrant
- Cougard
- Cougnard
- Couillet
- Coulin
- Coullaut
- Coulombeau
- Coulonjou
- Couly
- Coune
- Counord
- Couot
- Couplet
- Cour
- Couranjou
- Courbebaisse
- Courcelle Labrousse
- Courdesses
- Courio
- Courland
- Courot
- Courroux
- Courrèges
- Courseau
- Coursimault
- Courteaud
- Courties
- Courtillat
- Courtines
- Cousinard
- Cousinou
- Coussa
- Coussement
- Coussens
- Cousson
- Coussot
- Coustaud
- Couston
- Coustou
- Coutal
- Coutau Begarie
- Couteille
- Coutel
- Couteret
- Couteux
- Coutheillas
- Coutinet
- Coutolleau
- Coutouzis
- Coutris
- Couve
- Couvet
- Couvignou
- Couyoumdjian
- Couzi
- Coué
- Coves
- Covier
- Covilette
- Cowan
- Cowles
- Coyle
- Coyner
- Cozanet
- Cozema
- Cozma

