- Ochamegami Monogatari: Korokoro Pollon
- One Piece
- Ohayou! Spank
- Ore wa Subete wo "Parry" suru: Gyaku Kanchigai no Sekai Saikyou wa Boukensha ni Naritai
- Ookami to Koushinryou: Merchant Meets the Wise Wolf
- One Piece: Araburu Henkaku no Log: Anyaku Suru Kakumeigun!
- Oishinbo
- Ookami Shounen Ken
- Ooi! Tonbo
- One Piece: Making History! The Turbulent Old and New Four Emperors!
- One Room, Hiatari Futsuu, Tenshi-tsuki.
- Ooi! Tonbo (Dub)
- Odekake Kozame
- One Piece: Log of Rivalry! The Straw Hats and Cipher Pol
- Oomuro-ke: Dear Sisters
- Ochibi-san
- Ore dake Level Up na Ken
- Owarimonogatari
- Otokogi
- Oroka na Tenshi wa Akuma to Odoru
- One Piece: Dai Tannou Kikaku! "Shi no Gekai" Trafalgar Law
- Odekake Kozame × Chiba-ken Kuro Ajillo
- Ooyukiumi no Kaina: Hoshi no Kenja
- One Piece: Dai Tokushuu! Momonosuke no Mei Shogun e no Michi
- Ojou to Banken-kun
- Overtake!
- Okama Hakusho
- Onmyouji
- Onimusha
- One Piece: Luffy Senpai Ouen Kikaku! Barto no Himitsu no Heya!
- Osomatsu-san: Tamashii no Takoyaki Party to Densetsu no Otomarikai
- Osomatsu-san: Hipipo-Zoku to Kagayaku Kajitsu
- Okashi na Tensei
- Offside (TV)
- Ochame na Futago: Claire Gakuin Monogatari
- Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta... Voice Drama
- Ore-sama Kingdom
- Oooku
- Otonari ni Ginga
- Opus.COLORs
- Ojamajo Doremi: Heartwarming Theater
- One Piece: Dai Gekisen Tokushuu! Hangeki Doumei vs. Big Mom
- Ousama Ranking: Yuuki no Takarabako
- One Piece: Dai Gekisen Tokushuu! Zoro vs. Ookanban!
- Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken
- Oniichan wa Oshimai! (Uncensored)
- Oniichan wa Oshimai!
- Ooyukiumi no Kaina
- One Piece Movie 02: Nejimaki-jima no Daibouken
- One Piece Film: Red
- Obey Me! Season 2
- One Piece: Dai Gekisen Tokushuu! Mugiwara no Ichimi vs. Tobi Roppou
- Okusama wa Mahou Shoujo
- Oni: Thunder God's Tale
- One Piece: Dai Tettei Kaibou! Gekitou! 5-nin no Shin Sedai
- Overlord: Ple Ple Pleiades 4
- Overlord IV
- Orient: Awajishima Gekitou-hen
- Okoshiyasu, Chitose-chan Recaps
- Odd Taxi Movie: In the Woods
- Otome wa Boku ni Koishiteru: Trinkle Stars The Animation
- Ore, Tsushima (ONA)
- One Piece: Densetsu no Log! Akagami no Shanks!
- Onigiri ni Naritai Cogimyun
- Onipan!
- One Piece: Dai Tettei Kaibou! Kouzuki Oden Densetsu!
- Otome Game Sekai wa Mob ni Kibishii Sekai desu
- Onihei: Sono Otoko, Heizou Hasegawa
- One Piece: Taose! Kaizoku Ganzack
- Ousama Ranking
- Oretachi ni Tsubasa wa Nai: Hadairo Ritsu Kyuuwari Zou!?
- Okane ga Nai
- OTMGirls no Yokiyoki Channel
- Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta... OVA
- Obey Me!
- Osomatsu-san Movie: Gekijou Koukai Kinen - Original Tanpen Gekijou
- Okashi na Sabaku no Suna to Manu
- Ougon Bat
- One Week Friends Kaori no Nikki
- Ontama!
- Otona Joshi no Anime Time
- Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta... X
- Ore no Imouto ga Konnani Kawaii Wake ga Nai.: SD Chara ni Yoru Short Movie
- Ore, Tsushima
- Obey Me! Special - Devildom Family Trip
- Onaka Hime
- On Your Mark
- Ocha-ken: Chokotto Monogatari
