Click a Book Publisher name in the list below to view their Publisher Detail Page, which contains detailed information about the publisher, including a full list of young adult and children's titles for that publisher, contact information, submission guidelines, and more: Publishers starting with o All Letters
| Publisher | Reading Levels | Title Count (2023) |
|---|---|---|
| 1. Oxford University Press Inc | 4-8, 9-12 | 340 |
| 2. Overlook Press | 4-8 | 31 |
| 3. Oasis Audio | 9-12, 13+ | 17 |
| 4. Owlkids | 0-3, 4-8 | 10 |
| 5. Orchard Books | 4-8, 9-12 | 6 |
| 6. OakTara | 13+ | 2 |
| 7. Orion Publishing Group | 4-8, 9-12 | 1 |
| 8. Orion (an Imprint of The Orion Publishing Group Ltd ) | 1 | |
| 9. Osprey Publishing | 0 | |
| 10. Oberon Books | 0 | |
| 11. Omnigraphics Inc | 0 | |
| 12. Oneworld Publications | 0 | |
| 13. Booksurge, LLC | 0 | |
| 14. Our World of Books | 0-3, 4-8 | 0 |
| 15. Omnibus Press (Musicroom.com Ltd) | 0 | |
| 16. Omnibus Pub | ||
| 17. Obelisco | ||
| 18. Oxfordshire Publishing Company | ||
| 19. Oxmoor House | ||
| 20. Oxton House | ||
| 21. Oyate | ||
| 22. Oyster Books | ||
| 23. Oyster River Press | ||
| 24. Ozone Books | ||
| 25. Orchard House Press | ||
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