| Obake no Q Tarou - Wanwan Panic |
| Obocchama-kun |
| Obstacle Race |
| Ochin ni Toshi Puzzle Tonjan! |
| Oeka Kids - Anpanman no Hiragana Daisuki |
| Oeka Kids - Anpanman to Oekaki Shiyou!! |
| Oishinbo - Kyuukyoku no Menu 3 Bon Shoubu |
| Olympic IQ |
| Olympus no Tatakai |
| Olympus no Tatakai - Ai no Densetsu |
| Onyanko Town |
| Operation Secret Storm |
| Operation Wolf |
| Orb 3D |
| Original Fist of the North Star |
| Osomatsu-kun - Back to The Me no Deppa no Maki |
| Otaku no Seiza - An Adventure in the Otaku Galaxy |
| Othello |
| Othello (HES) |
| Outlanders |
| Over Horizon |
| Overlord |
