- One Piece: Dai Gekisen Tokushuu! Zoro vs. Ookanban!
- One Piece: Dai Tannou Kikaku! "Shi no Gekai" Trafalgar Law
- One Piece: Dai Tettei Kaibou! Kouzuki Oden Densetsu!
- One Piece: Dr. Chopper no Bouken Karte - Chichi to Musume no Ballad
- One Piece: Dr. Chopper no Bouken Karte - Hokoritakaki Gigant Dream
- One Piece: Dr. Chopper no Bouken Karte - Shinyuu-tachi no Crossroad
- One Piece: Episode of East Blue - Luffy to 4-nin no Nakama no Daibouken
- One Piece: Episode of Luffy - Hand Island no Bouken
- One Piece: Episode of Merry - Mou Hitori no Nakama no Monogatari
- One Piece: Episode of Nami - Koukaishi no Namida to Nakama no Kizuna
- One Piece: Episode of Sabo - 3 Kyoudai no Kizuna Kiseki no Saikai to Uketsugareru Ishi
- One Piece: Episode of Sorajima
- One Piece: Glorious Island
- One Piece: Gyojin Tou-hen
- One Piece: Heart of Gold
- One Piece: Innen no Log! Mugiwara no Ichimi to Cipher Pol
- One Piece: Jango no Dance Carnival
- One Piece: Kizamareru Rekishi! Gekidou no Shinkyuu Yonkou!
- One Piece: Mamore! Saigo no Dai Butai
- One Piece: Mezase! Kaizoku Yakyuu Ou
- One Piece: Nenmatsu Tokubetsu Kikaku! Mugiwara no Luffy Oyabun Torimonochou
- One Piece: Oounabara ni Hirake! Dekkai Dekkai Chichi no Yume!
- One Piece: Romance Dawn Story
- One Piece: Taose! Kaizoku Ganzack
- One Piece: The Movie 14 - Stampede
- One Piece: Umi no Heso no Daibouken-hen
- One Piece: Yume no Soccer Ou!
- One Piece: Yuruganu Seigi! Kaigun no Hokoritakaki Log!
- One Pound Gospel
- One Punch Man
- One Punch Man 2nd Season
- One Punch Man 2nd Season Commemorative Special
- One Punch Man 2nd Season Specials
- One Punch Man 3
- One Punch Man Specials
- One Punch Man Specials 3rd Season
- One Punch Man: Road to Hero
- One Room
- One Room Second Season
- One Room Second Season Special
- One Room Third Season
- One Room, Hiatari Futsuu, Tenshi-tsuki.
- One: Kagayaku Kisetsu e
- Oneechan ga Kita
- Oneechan ga Kita: Hajimete no… Kitaa!
- Onegai My Melody
- Onegai My Melody Sukkiri♪
- Onegai My Melody: Kuru Kuru Shuffle!
- Onegai☆Teacher
- Onegai☆Twins
- Ongaku
- Ongaku Shoujo (TV)
- Oni no Ko to Yuki Usagi
- Onigiri
- Oniichan dakedo Ai sae Areba Kankeinai yo ne!
- Oniichan dakedo Ai sae Areba Kankeinai yo ne! Specials
- Oniichan no Koto nanka Zenzen Suki ja Nai n da kara ne!!
- Oniichan no Koto nanka Zenzen Suki ja Nai n da kara ne!! Special
- Oniichan wa Oshimai!
- Oniichan wa Oshimai! (Uncensored)
- Oniisama e...
- Onikirimaru
- Onimomomomo
- Onimusha
- Onipan!
- Onkyo Seimeitai Noiseman
- Onmyou Kaiten Re:Birth
- Onmyou Taisenki
- Onmyouji
- Onsen Yousei Hakone-chan
- Onyankopon
- Ooi! Tonbo
- Ooi! Tonbo 2nd Season
- Ookami Kodomo no Ame to Yuki
- Ookami Shoujo to Kuro Ouji
- Ookami to Koushinryou
- Ookami to Koushinryou II
- Ookami to Koushinryou II: Holo no Short Anime
- Ookami to Koushinryou II: Ookami to Kohakuiro no Yuuutsu
- Ookami to Koushinryou: Merchant Meets the Wise Wolf
- Ookami-san to Shichinin no Nakama-tachi
- Ookii 1 Nensei to Chiisana 2 Nensei
- Ookiku Furikabutte
- Ookiku Furikabutte: Kihon no Kihon
- Ookiku Furikabutte: Natsu no Taikai-hen
- Ookiku Furikabutte: Natsu no Taikai-hen – Mokuhyou
- Ookuninushi to Sukunabikona
- Oomuro-ke
- Oomuro-ke: Dear Friends
- Oooku
- Ooyasan wa Shishunki!
- Ooyukiumi no Kaina
- Ooyukiumi no Kaina: Hoshi no Kenja
- Opus.COLORs
- Orange
- Orange: Mirai
- Ore dake Haireru Kakushi Dungeon
- Ore dake Level Up na Ken
- Ore dake Level Up na Ken Season 2: Arise from the Shadow
- Ore dake Level Up na Ken: ReAwakening
- Ore dake Level Up na Ken: Specials
- Ore ga Ojousama Gakkou ni "Shomin Sample" Toshite Gets♥Sareta Ken
- Ore ga Ojousama Gakkou ni "Shomin Sample" Toshite Gets♥Sareta Ken Specials
- Ore ga Suki nano wa Imouto dakedo Imouto ja Nai
- Ore ga Suki nano wa Imouto dakedo Imouto ja Nai Specials
- Ore Monogatari!!
- Ore no Imouto ga Konnani Kawaii Wake ga Nai
- Ore no Imouto ga Konnani Kawaii Wake ga Nai Specials
- Ore no Imouto ga Konnani Kawaii Wake ga Nai.
- Ore no Imouto ga Konnani Kawaii Wake ga Nai. Specials
- Ore no Kanojo to Osananajimi ga Shuraba Sugiru
- Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama Shiteiru
- Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama Shiteiru OVA
- Ore no Sora Keiji-hen
- Ore wa Seikan Kokka no Akutoku Ryoushu!
- Ore wa Subete wo "Parry" suru: Gyaku Kanchigai no Sekai Saikyou wa Boukensha ni Naritai
- Ore wo Suki nano wa Omae dake ka yo
- Ore wo Suki nano wa Omae dake ka yo: Oretachi no Game Set
- Ore, Tsushima
- Ore, Tsushima (ONA)
- Ore, Twintail ni Narimasu.
- Oreca Battle
- Orenchi no Furo Jijou
- ORESUKI Are you the only one who loves me: Game Over
- Oretachi ni Tsubasa wa Nai: Under the Innocent Sky.
- Orient
- Orient: Awajishima Gekitou-hen
- Oroka na Tenshi wa Akuma to Odoru
- Osakana wa Ami no Naka
- Osake wa Fuufu ni Natte kara
- Osake wa Fuufu ni Natte kara: Yuzu Atsukan
- Osananajimi ga Zettai ni Makenai Love Comedy
- Oshi ga Budoukan Ittekuretara Shinu
- Oshi no Ko 2nd Season
- Oshi no Ko Specials
- Oshiete Mahou no Pendulum: Rilu Rilu Fairilu
