| Christian Bourgois | France | 804 |
| Christian Brandstätter | France | 1 |
| Christian Desbois | | 3 |
| Christian Feuillette | Canada | 2 |
| Christian Navarro | France | 4 |
| Christian Pirot | France | 8 |
| Christine Claire | France | 0 |
| Christophe Chomant | France | 1 |
| Christophe Colomb | France | 5 |
| Christophe Lucquin | France | 14 |
| Chromosome | | 9 |
| Chronicle Books | Etats-Unis | 155 |
| Chronique | France | 35 |
| Chronique sociale | France | 65 |
| Chronos Arenam | | 9 |
| Chum | France | 7 |
| Chute Libre | France | 1 |
| Cicada Books | Angleterre | 0 |
| Cicerone Éditions | France | 1 |
| Cico books | Angleterre | 4 |
| Cider Mill Press | Etats-Unis | 1 |
| Cie du Pausilippe | | 4 |
| Ciel et Terre | France | 4 |
| Ciel Libre | France | 2 |
| CIEREC | France | 1 |
| Cima | France | 5 |
| Cincinnatus Press | | 3 |
| Cinco Puntos | Etats-Unis | 2 |
| Ciné Book | France | 2 |
| Cinebook | Angleterre | 17 |
| Cinema Novo CRL | France | 1 |
| CinémAction-Corlet | France | 2 |
| Cinéquaprod | | 1 |
| Cinquième saison | France | 1 |
| Cipango | France | 24 |
| Cipher-Naught | Etats-Unis | 15 |
| Circé | France | 43 |
| Circonflexe | France | 358 |
| Circulo latino | France | 7 |
| Citadel Press | France | 8 |
| Citadelles & Mazenod | France | 44 |
| Cité des livres | France | 3 |
| City | France | 1884 |
| City Lights Books | Etats-Unis | 12 |
| City Owl Press | | 14 |
| CityFiles Press | Etats-Unis | 1 |
| CKR | Canada | 19 |
| Claassen | | 2 |
| Clair de Lune | France | 451 |
| Claire Fontaine | France | 1 |
| Claire Lorrain | France | 1 |
| Claire Lumière | France | 26 |
| Claire Paulhan | France | 7 |
| Clancier-Guenaud | France | 30 |
| Clapàs | France | 3 |
| Clarendon Press | Angleterre | 3 |
| Clarion Books | Etats-Unis | 42 |
| Clarisse Kins | | 1 |
| Clarkson Potter | Etats-Unis | 13 |
| Clash Books | Etats-Unis | 2 |
| Class Ebook | Etats-Unis | 2 |
| Classic collection Carolina | Etats-Unis | 2 |
| Classical Comics | France | 4 |
| Classiques universels | France | 20 |
| Claude Drouin | | 2 |
| Claude Lefranc | | 18 |
| Clavis | | 8 |
| CLC | France | 12 |
| CLD | France | 4 |
| Clé | France | 3 |
| Cleis Press | Etats-Unis | 2 |
| Cleopas | France | 5 |
| Clerkenwell press | Etats-Unis | 1 |
| Clermont | Canada | 5 |
| Cleverton Books | France | 1 |
| Climats | France | 47 |
| Climbing Rosebud | France | 1 |
| Clinamen | | 1 |
| Clique | France | 2 |
| Clochette | France | 20 |
| Clockpunk Press | | 1 |
| CloniTech | | 1 |
| Clover Press | Etats-Unis | 1 |
| Clovis | France | 1 |
| Club Bibliophile de France | France | 7 |
| Club des amis du livre | France | 12 |
| Club des amis du livre progressiste | France | 3 |
| Club des Libraires de France | France | 10 |
| Club du Livre - Philippe Lebaud | France | 5 |
| Club du livre sélectionné | France | 4 |
| Club Express | France | 7 |
| Club Français du Livre | France | 9 |
| Club International du Livre | France | 2 |
| Club Stephen King | | 2 |
| Clube do Autor | Portugal | 3 |
| Clumba | | 1 |
| CMC Publising | | 2 |
| CN | Afghanistan | 12 |
| CNRS | France | 237 |
| CNT-RP | France | 2 |
