| Igam Entertainment | | 1 |
| IGB | France | 22 |
| Igloo Books | | 3 |
| Ignatius | France | 3 |
| Ikea family | | 2 |
| Ikor | | 11 |
| Iku Comics | France | 3 |
| Il Castoro | Italie | 1 |
| Il est Midi | France | 114 |
| Il était un ebook | | 34 |
| Il Saggiatore | | 1 |
| iLatina | | 17 |
| Iletisim Yayinlari | | 2 |
| Ilex Press | Angleterre | 2 |
| Ilire | Suisse | 1 |
| Ilivri | | 10 |
| ILV | France | 18 |
| Image Comics | Etats-Unis | 625 |
| Image et page | | 2 |
| Imagence | | 1 |
| Images | France | 1 |
| Images en manoeuvres | France | 0 |
| Imaginaire Nord | Canada | 1 |
| Imaginaires Sans Frontières | France | 12 |
| Imaginary Edge | | 21 |
| Imagine Publications | Canada | 2 |
| Imagine&Co | France | 4 |
| Imaginemos | | 2 |
| Imaginism studios | Canada | 1 |
| Imago | France | 58 |
| IMAJ | France | 3 |
| ImaJn'ère | France | 14 |
| Iman Eyitayo | | 5 |
| Imanou | France | 1 |
| IMAV | France | 24 |
| Imbroglio | | 1 |
| Imho | France | 96 |
| Impact | France | 7 |
| Impeccables | France | 1 |
| Imperiali Tartaro | France | 3 |
| Impressions du pays cathare | France | 1 |
| Imprimerie de Beaulé | France | 2 |
| Imprimerie de Rouge, Dumon et Fresne | | 1 |
| Imprimerie Nationale | | 26 |
| Imprimerie Rapide Du Centre Issoudin | France | 1 |
| Imprimerie Rey-Lyon | France | 1 |
| In Edit | France | 5 |
| In extenso | France | 1 |
| In fine | France | 19 |
| In Libro Veritas | France | 8 |
| In Media Res | | 1 |
| In Octavo | France | 22 |
| In Press | France | 48 |
| IN8 | France | 58 |
| Ina | | 4 |
| Incandescentes | France | 1 |
| Incartade(s) | | 19 |
| Inceptio | | 163 |
| Incipit En W | | 2 |
| Inculte | France | 91 |
| Inculte / Dernière marge | | 10 |
| Indeez Urban | | 2 |
| Indiana University Press | Etats-Unis | 1 |
| Indigène | France | 24 |
| Indigo | France | 14 |
| Indigo Montangero | France | 2 |
| Indigo Prairie Press | | 2 |
| Indigraphe | France | 1 |
| Inébranlable | France | 1 |
| INECAT | France | 1 |
| Ineja Press | | 2 |
| Infimes | France | 6 |
| Infini Challenges | France | 1 |
| Infinite Acacia | France | 2 |
| Infinity | France | 1224 |
| Influence et média | | 1 |
| Influx Press | Angleterre | 2 |
| Infoa | France | 2 |
| Infodium | France | 1 |
| Infolio | Suisse | 47 |
| Ink Book | France | 22 |
| Ink Monster | | 9 |
| Inklore | | 7 |
| Inkshares | Etats-Unis | 5 |
| Inkspell | Angleterre | 2 |
| Inkyard Press | Etats-Unis | 60 |
| InLibroVeritas | France | 1 |
| INPES | France | 5 |
| INRA | France | 4 |
| Insel | Allemagne | 23 |
| Insight (US) | Etats-Unis | 25 |
| Insight (UK) | Angleterre | 10 |
| InsomNic | | 2 |
| Inspirantia | | 4 |
| Institut du Monde Arabe | France | 1 |
| Institut Français de Mode / Regard | France | 2 |
| Institut Mémoires de l'édition contemporaine (IMEC) | France | 3 |
| Institut national d’histoire de l’art (INHA) | France | 1 |
| Institut Suédois | France | 1 |
| Instituto Cubano del Libro | Cuba | 1 |
