| Sassi junior | | 51 |
| Satas | | 3 |
| Satellite | | 6 |
| Sator | France | 1 |
| Sauramps médical | | 3 |
| Sauvages | Suisse | 5 |
| Sav-Heol | France | 1 |
| Savanes | | 2 |
| Saxo | France | 53 |
| Say-zan-sha Publications | Japon | 2 |
| Scala | | 34 |
| Scala | Angleterre | 3 |
| Scali | France | 17 |
| Scarabéa | France | 7 |
| Scènes de crimes | France | 18 |
| Sceptre | Angleterre | 83 |
| Sceren | France | 14 |
| Schaltzeit Verlag | Allemagne | 4 |
| Scherz | | 4 |
| Schiller & Wells | Etats-Unis | 1 |
| Schirmer/Mosel | Allemagne | 3 |
| Schleich | France | 1 |
| Scholastic | | 1472 |
| Schöningh | Allemagne | 3 |
| Schortgen | | 1 |
| Schroedel | | 4 |
| Schruf & Stipetic | Allemagne | 1 |
| Schwager & Steinlein | Allemagne | 3 |
| Schwartz & Wade Books | | 3 |
| Schwarzkopf & Schwarzkopf | | 2 |
| Sci-FiMania | | 6 |
| Science & Vie | France | 1 |
| science et bien commun | | 2 |
| Science Marxiste | France | 1 |
| Sciences et Culture | France | 12 |
| Sciences humaines | France | 45 |
| Scolavox | | 3 |
| Scotland Street Press | Écosse | 4 |
| Scottish Cultural Press | Écosse | 2 |
| Scout Comics | Etats-Unis | 4 |
| Scribd Originals | | 5 |
| Scribe | Australie | 30 |
| Scribner | Angleterre | 208 |
| Scribo Ergo Sum | | 1 |
| Scrineo | France | 561 |
| Scripta | France | 7 |
| Scrybe Press | France | 2 |
| Scutella | France | 14 |
| Scylla | France | 6 |
| SDL | France | 3 |
| SE.P.E. | France | 1 |
| Sea Lion Books | France | 1 |
| SEAD Storytelling | Etats-Unis | 1 |
| Seal Press | Etats-Unis | 25 |
| SeaStar | Etats-Unis | 1 |
| SEB | | 2 |
| Sébastien Chevrey | France | 14 |
| Secker & Warburg | Angleterre | 1 |
| Second Chance Press | | 5 |
| Seconde Chance | France | 15 |
| Secret d’étoiles | | 49 |
| Secrètes | | 8 |
| Sed | France | 6 |
| Sedes | France | 13 |
| Sedmay | France | 1 |
| Sedrap | France | 29 |
| Sefa | | 2 |
| Segep-Kent | France | 2 |
| Seghers | France | 154 |
| Séguier | France | 70 |
| Seismo | Suisse | 3 |
| Seix Barral | Espagne | 52 |
| Sekhmet | France | 2 |
| Sélect | France | 2 |
| Sélection des amis du livre Strasbourg | France | 2 |
| Sélection du Reader's digest | France | 199 |
| SelfMadeHero | France | 17 |
| Seli Arslan | | 2 |
| Selladore Press | Etats-Unis | 1 |
| Sellerio Editore Palermo | France | 19 |
| Séma | Belgique | 80 |
| Sembra Llibres | Espagne | 1 |
| Sèment | France | 4 |
| Semic | France | 114 |
| Semper Aenigma | | 1 |
| Senate | France | 5 |
| Sens & Tonka | | 10 |
| Sens contraires | | 2 |
| Sens Dessus Dessous | France | 27 |
| Sens Public | | 1 |
| Sensuelles | | 1 |
| Sentience | France | 1 |
| Seoul Cultural | Corée du Sud | 27 |
| Sépia | France | 23 |
| Sept Cavaliers | | 1 |
| September Publishing | | 4 |
| Septembre Éditeur | | 5 |
| Septentrion | France | 147 |
| Septième Choc | France | 4 |
| Séquences | | 1 |
