Anime serien
| Anime Name | Folgen | Sprache | Untertitel |
| Occult Academy | 13 / 13 |
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| Oideyo Doubutsu no Mori | 0 / 1 |
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| Ojamajo Doremi Dokkaan! | 16 / 51 |
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| Ojamajo Doremi Movie: Pop and the Magical Cursed Rose | 0 / 1 |
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| Ojamajo Doremi Na-i-sho | 13 / 13 |
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| Ojii-san no Lamp | 0 / 1 |
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| Okusama wa Mahou Shoujo | 0 / 13 |
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| Omamori Himari | 0 / 12 |
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| One Outs | 25 / 25 |
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| One Pound Gospel | 1 / 1 |
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| Onegai Twins | 12 / 12 |
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| Onegai Twins OVA | 0 / 1 |
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| Onii-chan no Koto Nanka Zenzen Suki Janain Dakara ne!! | 12 / 12 |
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| Onii-chan no Koto nanka Zenzen Suki Janain Dakara ne!! Special | 1 / 1 |
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| Onii-sama e | 21 / 39 |
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| Ontama! | 5 / 5 |
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| Ookami Kakushi | 12 / 12 |
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| Ookami-san to Shichinin no Nakamatachi | 0 / 12 |
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| Ore no Imouto ga Konna ni Kawaii Wake ga Nai | 12 / 12 |
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| Ore no Imouto ga Konna ni Kawaii Wake ga Nai - Specials | 0 / 4 |
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| Ore-tachi ni Tsubasa wa Nai | 4 / 12 |
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| Orphen | 24 / 24 |
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| Otogizoushi | 26 / 26 |
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| Otome Nadeshiko Koi Techou | 1 / 1 |
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| Otome wa Boku ni Koishiteru | 12 / 12 |
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| Otome wa Boku ni Koishiteru OVA | 1 / 1 |
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| Otome Youkai Zakuro | 13 / 13 |
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| Outlanders | 0 / 1 |
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| Outlaw Star | 26 / 26 |
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| OverDrive | 0 / 26 |
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| Overman King Gainer | 0 / 26 |
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| Ozuma | 3 / 6 |
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