Amiens 80000 - Picardie
- Cikrikci
- Cinget
- Cinibulk
- Cinna
- Cintré
- Cioc
- Ciocan
- Cioppani
- Cipriano
- Cirano Sas
- Cirillo
- Ciron
- Cirot
- Cirrincione
- Cislani
- Citas
- Citemétrie
- Civeit
- Cl Consultant
- Clabault Brocard
- Clabaut
- Clabaux
- Clabeau
- Claes
- Clairboux
- Claireaux
- Clairge
- Clara
- Claraz
- Claret
- Claro
- Clauce
- Claudepierre
- Claudie
- Claudine
- Claudéon
- Clausse
- Claussmann
- Claux
- Clavel
- Claverie
- Clavet Legru
- Clay
- Clemente
- Clemot
- Clerc
- Clercin
- Clerentin
- Clersy
- Cleré
- Cletra
- Cleuet
- Cleve
- Clichet
- Clicq
- Clicque
- Clin Pourchez
- Clinkspoor
- Cloes
- Cloet
- Clolery
- Clousse
- Clozier
- Clusman
- Cluzel
- Cléro
- Clérot
- Coadou
- Coaillet
- Coatalen
- Coathalem
- Cocagne Cathia
- Cocatrix
- Cochard
- Cocher
- Cochu
- Cocorocchio
- Cocqueman
- Cocquerel
- Cocry
- Cocuel
- Codega
- Codet
- Codjia
- Codrin
- Coeffier
- Coene
- Coeuillez
- Coevoet
- Coffea
- Coffigniez
- Coffrant
- Cognacq
- Cogneaux
- Cohin
- Coignet
- Coindin
- Coipel
- Coisnard
- Coito Garcia