| Caitlin Press | Canada | 1 |
| Cal Rage | France | 1 |
| Calamittie Jane Publishing | Etats-Unis | 3 |
| Calandre | France | 1 |
| Calder & Boyars | France | 1 |
| Calepin | France | 36 |
| Calip Tus | | 1 |
| Caliphae | France | 5 |
| CALIX | France | 30 |
| Calleva | France | 11 |
| Callicéphale | France | 7 |
| Callidor | France | 37 |
| Calligram | France | 159 |
| Calligrammes | France | 3 |
| Callisto | France | 8 |
| Callisto Media Inc. | Etats-Unis | 1 |
| Calmann-Lévy | France | 1954 |
| Calype | France | 2 |
| Cambourakis | France | 624 |
| Cambridge university press | Angleterre | 110 |
| CamCat Books | | 5 |
| Camden House | France | 1 |
| Caminho | Portugal | 12 |
| Camion blanc | France | 91 |
| Camion Noir | France | 29 |
| Campagne & compagnie | | 5 |
| Campagne Première | France | 1 |
| Campanile | France | 5 |
| Campfire Entertainment | Etats-Unis | 1 |
| Campus | France | 3 |
| Can Yayinlari | France | 4 |
| Cana | France | 2 |
| Canal BD | France | 9 |
| Canal+ | France | 1 |
| Canary Street Press | Etats-Unis | 2 |
| Candlewick Press | Etats-Unis | 93 |
| Canelo | Angleterre | 16 |
| Canongate | Ecosse | 186 |
| Canopé | | 21 |
| Canterbury Classics | Angleterre | 9 |
| Canvas | | 1 |
| Caouanne | | 4 |
| Cap Béar | France | 8 |
| Cappelen Damm | Norvège | 1 |
| Capprici | | 4 |
| Capricci | France | 49 |
| Capstone | | 10 |
| Captiot | France | 1 |
| Captured Press | | 3 |
| Capybarabooks | Luxembourg | 2 |
| Car rien n'a d'importance | France | 1 |
| Carabas | France | 120 |
| Caracolivres | France | 3 |
| Caractère | France | 28 |
| Caractères | France | 5 |
| Caraïbéditions | France | 6 |
| Caramel | Belgique | 10 |
| Caramello | Canada | 1 |
| Carbonio | Italie | 1 |
| Carcanet Press | France | 7 |
| Cardinal | Canada | 21 |
| Carina Press | Etats-Unis | 30 |
| Carl Hanser | Allemagne | 24 |
| Carl's Books | Allemagne | 1 |
| Carlo Zaglia | France | 1 |
| Carlotta | | 7 |
| Carlsen (DE) | Allemagne | 108 |
| Carlsen (DK) | Danemark | 10 |
| Carlton Books | Angleterre | 11 |
| Carmin | France | 5 |
| Carnet d'Art | France | 2 |
| Carnets du Centre du Graphisme | France | 1 |
| Carnets Nord | France | 44 |
| Carnot | | 4 |
| Carol Pub Group | France | 1 |
| Carolrhoda Books | Etats-Unis | 1 |
| Carpe Luna Publishing | France | 1 |
| Carpentier | France | 5 |
| Carpet bombing culture | | 3 |
| Carrefour | France | 48 |
| Carrefour du net | France | 2 |
| Carrère | France | 14 |
| Carrerre/Kian | France | 2 |
| Carroll & Graf Publishers | Etats-Unis | 3 |
| Carte Blanche | Canada | 5 |
| Cartoon Books | France | 3 |
| Cartouche | France | 10 |
| Casa | France | 17 |
| Casa das letras | Portugal | 8 |
| Casa de las Américas | Cuba | 1 |
| Casa Express | Maroc | 4 |
| Casbah | Algérie | 11 |
| Cascades | | 31 |
| Cases Rebelles | France | 2 |
| Casimiro | | 4 |
| Caspersen | France | 5 |
| Cassava Republic Press | Nigeria | 3 |
| Casse-tête théâtre | France | 2 |
| Cassell & Company | France | 12 |
| Cassis | France | 2 |
