| AS3P | France | 1 |
| ASA | Portugal | 50 |
| Asap | | 11 |
| Aschehoug | Norvège | 1 |
| ASCII Media Works | Japon | 37 |
| Asgard | France | 32 |
| Ash-Tree Press | Canada | 1 |
| Ashwood & Rose | | 2 |
| Asian District | France | 3 |
| Asiatika | France | 3 |
| Asinamali | France | 1 |
| Aska | | 1 |
| Askip | Suisse | 3 |
| Asmodée Editions | France | 1 |
| Aspect | | 11 |
| Aspen Comics | | 29 |
| Asphalte | France | 103 |
| ASSA | | 1 |
| Assimil | France | 27 |
| Association Blaireau & Sauvage | France | 1 |
| Association des amis des églises anciennes du département des Landes | France | 3 |
| Association des archivistes français | France | 2 |
| Association des bibliothécaires de France | France | 26 |
| Association Pasar Malam | France | 3 |
| Association pour la connaissance du pays de Charlieu | France | 1 |
| Association Réveils | France | 2 |
| Association Verbes | France | 2 |
| AssoR Histoire & BD | | 1 |
| Assouline | France | 23 |
| Assyelle | | 9 |
| AST | Russie | 3 |
| Asted | Canada | 1 |
| Aster | | 1 |
| Astérolivre | France | 1 |
| Asteure | France | 1 |
| Astiberri | Espagne | 8 |
| Astibouille | France | 2 |
| Astobelarra : Le Grand Chardon | France | 8 |
| Astoure | France | 36 |
| Astralabe | France | 11 |
| Astrid Franchet | France | 6 |
| Astronave | Espagne | 1 |
| Asuka | France | 509 |
| Asylum Press | Etats-Unis | 1 |
| Asymmetrical Press | | 7 |
| At noon books | Corée du Sud | 1 |
| Atalahalta | Suisse | 2 |
| ATALANTE Bruxelles | Belgique | 1 |
| Atavist Books | | 1 |
| Atelier 10 | Canada | 25 |
| Atelier Akatombo | France | 43 |
| Atelier Crea.Libertaire | France | 7 |
| Atelier de création libertaire | France | 9 |
| Atelier de l'agneau | France | 15 |
| Atelier de la belle étoile | France | 7 |
| Atelier des Nomades | Maurice | 7 |
| Atelier des Noyers | France | 4 |
| Atelier du Hanneton | France | 4 |
| Atelier du poisson soluble | France | 2 |
| Atelier EXB | France | 1 |
| Atelier Fol'Fer | France | 0 |
| Atelier La Feugraie | France | 1 |
| Atelier MDS | France | 2 |
| Atelier Millefeuille | France | 1 |
| Atelier National de Reproduction des Thèses | France | 1 |
| Atelier Perrousseaux | France | 6 |
| Ateliers Henry Dougier | | 89 |
| Atena | Finlande | 2 |
| Atheist republic | | 1 |
| Athéna | Canada | 14 |
| Athena Scientific | Etats-Unis | 1 |
| Athéna-Paris | France | 4 |
| Atheneum Books | Etats-Unis | 78 |
| Athenon S.A. | France | 1 |
| Athizes | France | 5 |
| Atica | France | 1 |
| Atine Nenaud | France | 27 |
| Atlande | France | 49 |
| Atlantes | | 12 |
| Atlantic BD | France | 13 |
| Atlantic Books | Angleterre | 91 |
| Atlantica | France | 21 |
| Atlantik | Allemagne | 3 |
| Atlantiques déchaînés | | 1 |
| Atlas | France | 248 |
| Atlas Contact | Pays-Bas | 4 |
| Atom Books | Angleterre | 110 |
| Atomic Club | France | 10 |
| Atout Lignes | France | 4 |
| Atoz / Les dessinateurs associés | | 1 |
| Atrabile | France | 108 |
| Atria | France | 64 |
| Atria Books | Etats-Unis | 273 |
| Atria Español | Espagne | 8 |
| Atrium | Suisse | 4 |
| Attelage | | 2 |
| Attila | France | 39 |
| Attinger | Suisse | 5 |
| Au bord des continents | France | 97 |
| Au bord du Lot | France | 2 |
