- Oishinbo: The Japan-America Rice War
- One Piece - Wano Kuni SP
- Original Dirty Pair: Flight 005 Conspiracy
- One Piece: Dr. Chopper's Adventure Checkup - Good Friends at a Crossroad
- One Piece: The Movie 14 - Stampede
- One Hundred Thousand Years of Qi Refining
- One Punch Man 2nd Season Specials
- One Punch Man 2nd Season
- Onyankopon
- Ore no Sora Keiji-hen
- Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama Shiteiru OVA
- Oshi No Ko Season 2
- Our Last Crusade or the Rise of a New World Season 2
- Ozma
- One Step Toward Freedom
- Origin: Spirits of the Past
- One Piece Fan Letter
- One Piece
- One-Million Year Trip: Bander Book
- One Piece: Glorious Island
- Oban Star-Racers
- Oam Monogatari: Sono Natsu, Watashi ga Shitta koto
- Obake Zukan
- Onegai My Melody: Kuru Kuru Shuffle!
