| Number | Poster | Title | Total Episode | Status | Type | Detail |
|---|---|---|---|---|---|---|
| 6900 | |
Okashi na Tensei | 12 | Ongoing | Summer 2023 Anime | |
| 6901 | |
Okinawa de Suki ni Natta Ko ga Hougen Sugite Tsurasugiru | 8 | Ongoing | TV Show | |
| 6902 | |
Okoshiyasu, Chitose-chan | 24 | Ongoing | Episodes | |
| 6903 | |
Okoshiyasu, Chitose-chan Recaps | 18.5 | Completed | Special | |
| 6904 | |
Okusama ga Seitokaichou! | 12 | Completed | Summer 2015 Anime | |
| 6905 | |
Okusama ga Seitokaichou! OVA | 1 | Completed | TV Series | |
| 6906 | |
Okusama ga Seitokaichou!+! | 12 | Completed | Fall 2016 Anime | |
| 6907 | |
Okusama ga Seitokaichou!+! | 12 | |||
| 6908 | |
Okusama wa Mahou Shoujo | 13 | Completed | TV Series | |
| 6909 | |
Olympia Kyklos | 24 | Ongoing | Spring 2020 Anime | |
| 6910 | |
Omae Umasou da na | 1 | Completed | Movie | |
| 6911 | |
Omae wa Mada Gunma wo Shiranai | 12 | Completed | Spring 2018 Anime | |
| 6912 | |
Omamori Himari | 12 | Completed | TV Series | |
| 6913 | |
Omiai Aite wa Oshiego, Tsuyokina, Mondaiji. | 12 | Completed | Fall 2017 Anime | |
| 6914 | |
Omishi Mahou Gekijou: Riskyâ Safety | 24 | Completed | TV Series | |
| 6915 | |
Omoi no Kakera | 1 | Completed | Episodes | |
| 6916 | |
Omoi, Omoware, Furi, Furare | 1 | Completed | Movie | |
| 6917 | |
Omoide no Marnie | 1 | Completed | Movies | |
| 6918 | |
On Your Mark | 1 | Completed | Music | |
| 6919 | |
Onaka Hime | 2 | Completed | ONA | |
| 6920 | |
Onara Gorou | 13 | Completed | Episodes | |
| 6921 | |
One Move to Explode the Cultivation Realm | 1 | ONA | ||
| 6922 | |
One Off OVA | 2 | Completed | Episodes | |
| 6923 | |
One Outs | 25 | Completed | TV Series | |
| 6924 | |
One Piece | 1122 | Ongoing | TV Series |