Female J-POP Idol Series Beginning with O
- [Oshi no ko]
- Odd Taxi
- Ohitori sama
- Ojamajo
- Okoshiyasu Chitose Chan
- One Piece
- One Punch Man
- Onegai My Melody
- Ongaku to Hito
- Online Game
- Orange Page
- Ori Sta
- Osama Game
- Oshi ga Budokan Ittekuretara Shinu
- Osomatsu-san
- Ossan's Love
- Otome continue
- otona MUSE
- Ouran Koko Host Club
- Scenes from Awajima (Awajishima Hyakkei)