TV | Ocean Likes Me | K-Drama | 2022 |
| Oda Nobunaga (1998) | J-Movie | 1998 |
TV | Oh! My Assistant | K-Drama | 2022 |
TV | Oh My Jump! | J-Drama | 2018 |
| Ohikkoshi | J-Movie | 1993 |
| Okami Kodomo no Ame to Yuki | J-Movie | 2012 |
TV | Old Fashion Cupcake | J-Drama | 2022 |
| Oldboy | K-Movie | 2003 |
TV | On Cloud Nine | TL-Drama | 2022 |
| On Your Wedding Day | K-Movie | 2018 |
TV | Once Again | K-Drama | 2022 |
| Once Upon a Time | CH-Movie | 2017 |
| Once Upon a Time in High School | K-Movie | 2004 |
| One In A Hundred Thousand | J-Movie | 2020 |
| Oneechanbara 2: The VorteX | J-Movie | 2009 |
| Oneechanbara | J-Movie | 2008 |
| Ookami Shoujo to Kuro Ouji | J-Movie | 2016 |
| Oppai Volleyball | J-Movie | 2009 |
| Orange | J-Movie | 2015 |
| Ore Monogatari!! | J-Movie | 2015 |
TV | Ore no Sukato, Doko Itta? | J-Drama | 2019 |
TV | Orient Kyuuko Satsujin Jiken | J-Drama | 2015 |
| Osama to Boku | J-Movie | 2012 |
TV | Osozaki no Himawari | J-Drama | 2012 |