- One Piece: The Movie 13 - Film: Gold
- One Piece Film: Strong World Episode 0
- One Piece: Episode of Nami - Tears of a Navigator and the Bonds of Friends
- Onegai My Melody Sukkiri♪
- One Piece Special: Adventure in the Ocean's Navel
- One Punch Man: Road to Hero
- One Punch Man 3: Specials
- One Piece: Django's Dance Carnival
- One-Punch Man Season 3
- Oneechan ga Kita
- One Piece: Making History! The Turbulent Old and New Four Emperors!
- One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!
- One Pound Gospel
- One Piece: Unwavering Justice! The Navy's Proud Log!
- Onegai My Melody
- One Punch Man
- One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
- OniAi
- Overlord: Ple Ple Pleiades
- Onimomomomo
- Okko's Inn
- Our Dating Story: The Experienced You and The Inexperienced Me, Kimizero
- Owari no Seraph: Vampire Shahar
- Onmyo Kaiten Re:Birth Verse
