| Castalia | Espagne | 10 |
| Casteleven - GDBM | France | 3 |
| Castella | Suisse | 1 |
| Castells | France | 3 |
| Castelmore | France | 639 |
| Castelvecchi | Italie | 1 |
| Casterman | Belgique | 4691 |
| Casterman / L'École des loisirs | | 26 |
| Castle Books | Etats-Unis | 2 |
| Castor & Pollux | France | 2 |
| Catapult | | 20 |
| Catedra | France | 62 |
| Cattès | France | 1 |
| Cauchemars | France | 4 |
| Cauchemars Airlines | Canada | 2 |
| Caurette | France | 45 |
| Cauris Livres | Mali | 1 |
| Cavaliers Seuls | France | 6 |
| CBBD - La poste Belge | | 2 |
| Cbj | Allemagne | 24 |
| Cbt | Allemagne | 16 |
| CCDMD | Canada | 1 |
| CdL | France | 13 |
| CDS | France | 3 |
| CEC | | 3 |
| Cécile Defaut | France | 5 |
| Cédalion | France | 2 |
| Cedar Fort | Etats-Unis | 2 |
| Cedar Grove | | 1 |
| Cedis | France | 1 |
| Cèdre Lune | France | 4 |
| Celadon Books | Etats-Unis | 19 |
| Céléphaïs | France | 7 |
| Céleste | France | 20 |
| Celiv | France | 9 |
| CELT | France | 4 |
| Celtik | France | 2 |
| Cemetery Dance | France | 6 |
| Cénacle de France | France | 13 |
| Cengage Learning | | 1 |
| Cénomane | France | 9 |
| Cent Mille Milliards | France | 7 |
| Cent pages | France | 12 |
| Center Point Large Print | Etats-Unis | 5 |
| Center Street | | 1 |
| Centon | France | 11 |
| Central Avenue | Etats-Unis | 1 |
| Centrala | Angleterre | 1 |
| Centre d'Art d'Ixelles | France | 1 |
| Centre de création littéraire | France | 2 |
| Centre des Monuments Nationaux | France | 6 |
| Centre du Monde | France | 3 |
| Centre Georges Pompidou-Ircam | France | 14 |
| Centre National de Documentation Pédagogique | France | 5 |
| Centre national de la danse | France | 49 |
| Centre national de la photographie | France | 3 |
| Centre national du livre | France | 9 |
| Centre national et musée Jean Jaurès | France | 1 |
| Centre Universe | | 6 |
| Centro Editoriale Valtortiano (CEV) | Italie | 1 |
| Centro Nicaragüense de Escritores | Nicaragua | 10 |
| Centum Books | Angleterre | 2 |
| Century | Etats-Unis | 55 |
| Cénusia | | 4 |
| Ceol Bosca | France | 1 |
| Cépaduès | France | 4 |
| Cépages | France | 31 |
| Cercle | France | 7 |
| Cercle Beltane | France | 2 |
| Cercle d'Archéologie de Montluçon et de la région | France | 2 |
| Cercle d'art | France | 6 |
| Cercle des écrivainEs | France | 1 |
| Cercle du bibliophile | France | 200 |
| Cercle du livre précieux | France | 7 |
| Cercle média | Côte d\'Ivoire | 1 |
| Cercle Polar | France | 2 |
| Cérès | France | 4 |
| Cerf | France | 267 |
| Cerf-Volant | France | 54 |
| Cerises & Coquelicots | France | 15 |
| Cernunnos | | 16 |
| Cerulean Books | | 1 |
| Cetro | France | 4 |
| CFC | Belgique | 7 |
| CFD / Hélikon | France | 1 |
| CFPJ | France | 1 |
| CFSL Ink | France | 21 |
| Ch. Rolland | France | 2 |
| Ch.Aug. Desoer | France | 1 |
| Chacellor Press | France | 2 |
| Chaix-Desfosses-Neogravure | | 7 |
| Chalcédoine | | 1 |
| Chambre Noire | France | 29 |
| Chamina | France | 6 |
| Champ Libre | France | 21 |
| Champ Vallon | France | 52 |
| Champaka | France | 6 |
| Chan-ok | France | 34 |
| Chancellor Press | France | 5 |
| Chandeigne | France | 68 |
