| Guy Le Prat / Les auteurs associés | France | 4 |
| Guy Saint-Jean | Canada | 491 |
| Guy Trédaniel | France | 449 |
| GW Publishing | Écosse | 2 |
| Gwen Català | France | 9 |
| Gyldendal | Danemark | 8 |
| Gypaète | France | 1 |
| H | France | 7 |
| H&O | France | 111 |
| H&K | France | 3 |
| H. Dégé | Suisse | 1 |
| H. Dessain | France | 3 |
| H. Piazza | France | 5 |
| h.f. Ulmmann | | 5 |
| H.J.W. Becht | Pays-Bas | 1 |
| H2T | France | 78 |
| Hachette | France | 12399 |
| Hachette (Book Group) | | 92 |
| Hachette / BnF | | 193 |
| Hachette / Fayard | | 3 |
| Hachette / Gallimard | France | 54 |
| Hackett Publishing | Etats-Unis | 3 |
| Hackoeurs | | 2 |
| Hades | | 4 |
| Haere Po | | 1 |
| Haerès | | 1 |
| Haikasoru | Etats-Unis | 5 |
| Haïtalis | | 1 |
| Haksan | Corée du Sud | 1 |
| Hakusensha | Japon | 95 |
| Halcyon Press | Angleterre | 1 |
| Hallmark Entertainment Books | Etats-Unis | 5 |
| Halloween Pocket | France | 10 |
| Hamac | | 49 |
| Hamburger Lesehefte | Allemagne | 2 |
| Hamish Hamilton | France | 37 |
| Hamlyn | Angleterre | 8 |
| Hammer | Etats-Unis | 10 |
| Hampton Creek | | 2 |
| Hampton Roads | Etats-Unis | 4 |
| Handheld Press | Angleterre | 1 |
| Hannenorak | | 18 |
| Hanover Square Press | | 24 |
| Hanser | Allemagne | 8 |
| Happy End | | 1 |
| Harcourt | Etats-Unis | 29 |
| Hard Case Crime | Etats-Unis | 7 |
| Harden Publishing | Australie | 4 |
| Hardie Grant Publishing | Angleterre | 8 |
| Hardigan | France | 205 |
| Harding Book Publishing | Angleterre | 1 |
| Harenberg | | 1 |
| Harfang | | 1 |
| Harlequin | | 9183 |
| Harlequin | Australie | 196 |
| Harmonia mundi | | 11 |
| Harmonia production | | 8 |
| Harmony Ink Press | | 41 |
| Haro | France | 64 |
| Harper | | 475 |
| HarperAlley | | 8 |
| HarperAudio | | 96 |
| HarperCollins | Etats-Unis | 4221 |
| HarperOne | | 45 |
| HarperTeen | | 545 |
| HarperTorch | | 26 |
| HarperTrophy | | 31 |
| HarperVoyager | | 566 |
| Harrap | France | 6 |
| Harrap's | France | 124 |
| Harrassowitz | | 2 |
| Harry N. Abrams | Etats-Unis | 59 |
| Hartini Poli | Grèce | 1 |
| Hartwick | | 30 |
| Harvard Business Review | | 6 |
| Harvard Common Press | | 1 |
| Harvard University Press | Etats-Unis | 32 |
| Harvest Books | Etats-Unis | 14 |
| Harvest House | | 3 |
| Harvill Secker | France | 44 |
| Hashtag | Canada | 11 |
| Hat & Beard Press | Etats-Unis | 1 |
| Hatanna | France | 7 |
| Hatco Publishing | | 17 |
| Hatier | France | 1029 |
| Haunted Computer Books | France | 11 |
| Haute Tension | France | 9 |
| Hauteurs | | 3 |
| Hauteville | | 705 |
| Haver Street Press | | 16 |
| Hawk Publishing, LLC | Etats-Unis | 2 |
| Hay House | | 32 |
| Haymarket Books | Etats-Unis | 15 |
| Haymon Verlag | Autriche | 1 |
| Haynes | | 1 |
| Hazan | France | 132 |
| Hazelden Publishing | Etats-Unis | 2 |
| HB | France | 8 |
| HC | France | 181 |
| HCKR | France | 2 |
