| Insula | | 4 |
| Insulae | | 1 |
| Inter | France | 9 |
| Inter-Livres | France | 4 |
| InterEditions | | 58 |
| Interférences | France | 28 |
| Interkeltia | France | 4 |
| Interlinea | Italie | 1 |
| Interlink | Angleterre | 2 |
| Interlude Press | | 20 |
| Intermix | Etats-Unis | 12 |
| International Manga Association | France | 1 |
| Intersentia | | 3 |
| Intersistem | | 2 |
| Intervalles | France | 109 |
| Intervista | France | 50 |
| Intrepid Reads | | 2 |
| Inukshuk | | 7 |
| inusitées | Canada | 1 |
| Invenit | France | 25 |
| Inventaire/Invention | | 1 |
| Invertido Ediciones | Chili | 1 |
| Investig’Action | Belgique | 5 |
| Inzemoon | | 2 |
| IP | | 1 |
| Ipagine | France | 3 |
| Ipanema | | 16 |
| Ipomée | France | 5 |
| Irène Pauletich | France | 5 |
| Irfan | France | 2 |
| IRH Press | | 1 |
| Irodori Comics | | 1 |
| Iron Circus Comics | Etats-Unis | 1 |
| IRTS Languedoc-Roussillon | France | 1 |
| Irysnoir | | 1 |
| IS | France | 62 |
| IS | France | 2 |
| Isabelle Sauvage | France | 4 |
| Isan Manga | | 26 |
| Ishi press | | 4 |
| Isis | Canada | 27 |
| Island Press | | 3 |
| Island Tales Press | | 9 |
| Isoète | France | 4 |
| ISS UNIL | Suisse | 2 |
| Issekinicho | | 21 |
| Istros Books | | 1 |
| Istya & Cie | France | 9 |
| It Books | Etats-Unis | 17 |
| It Revolution | Etats-Unis | 0 |
| Itak | | 2 |
| Italiques | France | 2 |
| Itero | France | 3 |
| Itinéraires | | 2 |
| Itka | France | 3 |
| iUniverse | Etats-Unis | 7 |
| IV Horsemen | | 3 |
| Ivalentiah | France | 1 |
| Ivan Davy | | 1 |
| Ivréa | France | 16 |
| Ivres de Livres | France | 4 |
| Ivy Books | France | 4 |
| Iwa | | 10 |
| Iwari | | 1 |
| iXe | | 37 |
| Ixelles | France | 44 |
| J | France | 30 |
| J'ai Lu | France | 14420 |
| J'ai Lu / Fluide glacial | | 6 |
| J-Novel Club | Etats-Unis | 23 |
| J-Pop | Italie | 3 |
| J. Dieu-Brichart | Belgique | 1 |
| J. M. Collet | France | 5 |
| J. M. Dent & Sons | Angleterre | 3 |
| J. Susse | France | 3 |
| J.-J. Dubochet et Compagnie | France | 1 |
| J.B. Baillière et fils | France | 2 |
| J.Dupuis Fils et Cie | France | 3 |
| J2B Publishing | | 1 |
| J2C | | 1 |
| Jabberwocky Literary Agency | | 10 |
| Jacarandá | Portugal | 1 |
| Jack's House | Etats-Unis | 3 |
| Jackanapes Press | Etats-Unis | 1 |
| Jacob-Duvernet | France | 40 |
| Jacqueline Chambon | France | 109 |
| Jacques André | France | 10 |
| Jacques Antoine | France | 7 |
| Jacques Flament | France | 6 |
| Jacques Marseille | | 2 |
| Jacques-Marie Laffont | France | 4 |
| Jadis | France | 1 |
| Jaeger - D'Hauteville | | 2 |
| Jaguar | Pologne | 2 |
| Jaico Publishing House | | 2 |
| Jalan | | 1 |
| Jamsai Publishing | Thaïlande | 5 |
| Janus | France | 3 |
| Jardin botanique national de Belgique | | 3 |
| Jardin des mots | France | 3 |
