- Our Last Crusade or the Rise of a New World
- Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama Shiteiru OVA
- Opus.COLORs
- Oomuro-ke: Dear Sisters
- One Piece Film: Strong World Episode 0
- Ore no Sora Keiji-hen
- Over the Sky
- Oomuro-ke: Dear Friends
- One Piece: Episode of Skypiea
- Our Last Crusade or the Rise of a New World Season 2
- Ooya-san wa Shishunki!
- Orange
- One Piece: A Project to Fully Enjoy! `Surgeon of Death` Trafalgar Law
- Ore wo Suki nano wa Omae dake ka yo: Oretachi no Game Set
- Oreshura
- One Piece: Making History! The Turbulent Old and New Four Emperors!
- Orange: Mirai
- Ore ga Suki nano wa Imouto dakedo Imouto ja Nai Specials
- ORESUKI Are you the only one who loves me: Game Over
- One Piece: Glorious Island
- Orient Part 2
- Onipan!
- Otaku no Seiza
- Otogi Zoshi: The Legend of Magatama
