| Number | Poster | Title | Total Episode | Status | Type | Detail |
|---|---|---|---|---|---|---|
| 6900 | |
Obake Zukan | 22 | Ongoing | Summer 2020 Anime | |
| 6901 | |
Oban Star-Racers | 26 | Completed | TV Series | |
| 6902 | |
Obey Me! | 12 | Ongoing | ONA | |
| 6903 | |
Obey Me! Season 2 | 12 | Ongoing | ONA | |
| 6904 | |
Obey Me! Special - Devildom Family Trip | 1 | Completed | ONA | |
| 6905 | |
Obsolete | 12 | Ongoing | ONA | |
| 6906 | |
Occult Academy | 13 | Completed | TV Series | |
| 6907 | |
Occultic;Nine | 12 | Completed | Fall 2016 Anime | |
| 6908 | |
Ocean Waves | 1 | Completed | Episodes | |
| 6909 | |
Ocha-ken: Chokotto Monogatari | 26 | Completed | TV Series | |
| 6910 | |
Ochame na Futago: Claire Gakuin Monogatari | 26 | Completed | TV Series | |
| 6911 | |
Ochamegami Monogatari: Korokoro Pollon | 10 | Completed | TV Series | |
| 6912 | |
Ochibi-san | 24 | Ongoing | Fall 2023 Anime | |
| 6913 | |
Ochikobore Fruit Tart | 12 | Ongoing | Fall 2020 Anime | |
| 6914 | |
Oda Cinnamon Nobunaga | 12 | Ongoing | Winter 2020 Anime | |
| 6915 | |
Oda Nobuna No Yabou | 12 | Completed | TV Series | |
| 6916 | |
Odd Taxi | 13 | Ongoing | Spring 2021 Anime | |
| 6917 | |
Odd Taxi Movie: In the Woods | 1 | Completed | Movie | |
| 6918 | |
Odekake Kozame | 60 | Ongoing | ONA | |
| 6919 | |
Odekake Kozame à Chiba-ken Kuro Ajillo | 1 | Completed | Special | |
| 6920 | |
Odin: Koushi Hansen Starlight | 1 | Completed | Movie | |
| 6921 | |
Oedo wa Nemurenai! | 1 | Completed | OVA | |
| 6922 | |
Offside (TV) | 39 | Completed | TV Series | |
| 6923 | |
Oh! Edo Rocket | 26 | Completed | TV Series | |
| 6924 | |
Oh! Family | 3 | Completed | TV Series |