| Sombre Crapule ! | France | 1 |
| Sombres Rets | France | 14 |
| Something else | | 201 |
| Somme toute | Canada | 44 |
| Somogy | | 29 |
| Sonatine | France | 546 |
| Sonobook | France | 30 |
| Sonzogno | Italie | 5 |
| Sophene | | 1 |
| Sophia | France | 1 |
| Sophie Gramond | France | 1 |
| Sophie Quesse | | 2 |
| Soratu | France | 3 |
| Sorengo | France | 1 |
| Sort of Books | France | 16 |
| Sortilèges | France | 18 |
| SOS Homophobie | France | 2 |
| Soteca | France | 1 |
| Sotelo Blanco | Espagne | 2 |
| Souffle Court | | 3 |
| Souffle du rêve | France | 4 |
| Souffles | France | 5 |
| Souffles littéraires | France | 11 |
| Soukha | France | 4 |
| Soul Mate Publishing | | 2 |
| Soulières | Canada | 41 |
| Sound Tropez Studios | | 3 |
| Sounds True | Etats-Unis | 2 |
| Source-La Sirène | France | 8 |
| Sourcebooks | Etats-Unis | 382 |
| Souris Noire | | 4 |
| Sous la cape | France | 3 |
| Sous la lime | France | 2 |
| Sous le Sceau du Tabellion | France | 2 |
| South Dakota State Historical Society | | 2 |
| South end press | Etats-Unis | 3 |
| Souvenir Press | France | 9 |
| Spaceman project | | 21 |
| Sparkle | France | 2 |
| Sparkpress | | 10 |
| Spartorange | France | 1 |
| SPCK | Angleterre | 2 |
| Speak | France | 94 |
| Spéciale | France | 21 |
| Spectra | Etats-Unis | 87 |
| Spectrum Literary Agency | | 3 |
| Speedernet | France | 1 |
| Spencer Hill Press | Etats-Unis | 38 |
| Spengler | | 1 |
| Sperling & Kupfer | Italie | 23 |
| Sperling Paperback | France | 16 |
| sPfc | | 9 |
| Sphere | Angleterre | 329 |
| Sphères | France | 3 |
| Spicy | France | 6 |
| Spiegel & Grau | Etats-Unis | 20 |
| Spinelle | | 53 |
| Spinifex | Australie | 3 |
| Spinsters Ink | Etats-Unis | 1 |
| Spiramus press | | 1 |
| Spiritualités vivantes | France | 4 |
| Splash | | 34 |
| Splitter | Allemagne | 13 |
| Spootnik | France | 8 |
| Spootnik / Arkantes | France | 1 |
| Sportförlaget | Suède | 2 |
| Sporting Garland Press | France | 2 |
| Spotify Audiobooks | Etats-Unis | 3 |
| Spring | Taïwan | 8 |
| Spring Books | France | 4 |
| Springer | | 6 |
| Square Enix | | 131 |
| Square Fish | France | 114 |
| Square Peg | | 10 |
| ST | France | 53 |
| St Michel | France | 2 |
| St. Benno | Allemagne | 2 |
| St. Martin's Press | Etats-Unis | 694 |
| Stackpole Books | Etats-Unis | 1 |
| Stalker | | 1 |
| Standaard | France | 78 |
| Stanford university press | | 4 |
| Stanké | Canada | 164 |
| Star Comics | Italie | 32 |
| Stardom | France | 4 |
| Stardust | | 46 |
| Starfire | France | 5 |
| Starling Books | Etats-Unis | 13 |
| State University of New York Press | Etats-Unis | 2 |
| Station T | Canada | 11 |
| Stauffenburg | Allemagne | 1 |
| Stealth Press | Etats-Unis | 1 |
| Steamy D Publishing | France | 2 |
| Steaw | France | 1 |
| STÉDITIONS | France | 28 |
| SteeBlackStories | | 2 |
| Steeles Publishing | France | 3 |
| Steerforth Press | | 2 |
| Steidl | | 3 |
| Stein and Day | Etats-Unis | 1 |
