Persons
| 1. | O (actor) |
| 2. | O Dobrindt Orchestra (orchestra) |
| 3. | O Melhor Do Anima Mundi (actor) |
| 4. | O Mi Jia Can (actor) |
| 5. | O Paradiso |
| 6. | O Yuki Conjugate |
| 7. | O'Brian & Gerrard OST: Summer Catch |
| 8. | O'byrne (actor) DVD: An Everlasting Piece |
| 9. | O'Connell (actor) |
| 10. | O'Dale Ireland (director) |
| 11. | O'Dell |
| 12. | O'Dell & Porsha OST: Foolish |
| 13. | O'Donel Levy |
| 14. | O'Donovan Shiell (actor) |
| 15. | O'Jays |
| 16. | O'Neal Compton (actor) |
| 17. | O'Neal Twins |
| 18. | O'Neill (composer) |
| 19. | O'Riordan OST: Short Cuts |
| 20. | O'Ryan OST: You Got Served |
| 21. | O'Toole (actor) |
| 22. | O-Lan Jones (actor) |
| 23. | O-Town |
| 24. | O-Town Boyz OST: Black Spring Break |
| 25. | O. Dzisko (actor) |