| Gaetan Morin Editeur |
| Galaxia Gutenberg |
| Gallimard |
| Garland Science |
| Garzanti |
| Gedisa |
| Gerlach Press |
| Getty Conservation Institute |
| Giappichelli |
| Giovanni Fioriti Editore |
| Giovanni Pietro Pinelli |
| Giovanni Rossi |
| Giuffrè |
| Giunti |
| Golden Marketing |
| Grasset |
| Graywolf Press |
| Grupo Loyola |
| Hampton Press |
| Hanser |
| Harcourt |
| Harper Collins |
| Harrassowitz Verlag |
| Harvard Business School Press |
| Harvard University Press |
| Hazan |
| Head of Zeus |
| Henry Holt |
| Herder |
| Hermes Sciences |
| Historical Quest |
| Hoepli |
| Honoré Champion |
| Houghton Mifflin Harcourt |
| Hudson Street Press |
| Humanitas |
| HVG-Orac |
| I.B. Tauris |
| Iacobelli |
| Ibis Grafika |