| Title | Type | Eps. | Score | |
 | Music video for the song Oba Ano Omamori by Yuuko Narisoko that was featured on NHK's Minna no Uta program. The video features art by Shao Xuequing that was animated by Tatsuro Ogata. | Music | 1 | N/A |
 | NHK's Heat Exhibition is an event hosted each year in March which invites individuals with disabilities to submit poetry for the opportunity to have their work featured alongside original artwork by a...read more. | Music | 1 | N/A |
 | A music video for the song "Obaachan no Takaramono" by Yoshiko Kawase. Aired as part of NHK's Minna no Uta program. | Music | 1 | N/A |
 | A metaphorical expression of a child who got separated from their mother at a department store and is overwhelmed by the anxiety with having to seek a stranger for help (and the experience of being in...read more. | Music | 1 | 5.55 |
 | Music video for the song Obake Nante Nai sa by Mieko Hirota that was featured on NHK's Minna no Uta program. It is considered to be lost media. | Music | 1 | N/A |
 | Music video for the song Obake no Namida by Leo Ieiri, that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Obake to Issho by Tokyo Performance Doll that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Obenkyou Shitoite yo by the band Zutto Mayonaka de Iinoni. (ZUTOMAYO). | Music | 1 | 7.30 |
 | Music video for the song Obentou Bako no Uta: Anata e no Otegami by Yoshiko Hanzaki that was featured on NHK's Minna no Uta program. It was later included on DVD with the release of her first major si...read more. | Music | 1 | N/A |
 | Music video for the song Ocean Bby by Mili. | Music | 1 | N/A |
 | Ino Sakura has just moved to Tokyo to join the newly formed Fruit Tart, an idol group composed of three members besides herself—Roko Sekino, a washed-up child actor; Hayu Nukui, a failed musician; and...read more. | TV | 12 | 6.83 |
 | Music video for the song Odo by Ado. | Music | 1 | 7.50 |
 | Animated music video for the song Odoru Pompokolin from Chibi Maruko-chan, covered by Momoiro Clover Z. | Music | 1 | N/A |
| | Music video for the song Oedo Nihonbashi by Mieko Hirota that was featured on NHK's Minna no Uta program. It is considered to be lost media. | Music | 1 | N/A |
 | A song about birds who delivers dreams to those sleeping under the light of a shooting star. | Music | 1 | N/A |
 | Music video for the song Offside by Dannie May. | Music | 1 | N/A |
 | Music video for the song Ofuro no Kazoe Uta by Bikkuri Electric Company (Juuichi Sase) that was featured on Fuji TV's Hirake! Ponkikki program. | Music | 1 | 4.96 |
 | Music video for the song Ofuro no Uta by Yuuno Ioki from Tokyo Children's Choir that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Ofuroya-san e Tsuretette by Yuuta Hashizume and the NHK Tokyo Children's Choir (NHK Tokyo Jidou Gasshoudan) that was featured on NHK's Minna no Uta program. The video was anim...read more. | Music | 1 | N/A |
 | Music video for Oh Baby Plus by GREAT3. From Climax E.P. (2003) Song produced by Rei Harakami. | Music | 1 | 5.33 |
 | Music video for the song Oh My God by Akakage. | Music | 1 | N/A |
 | Backed by an ode John Lennon penned himself, the relationship between him and his wife, Yoko Ono, is beautifully depicted. Alongside their romance, '60s-appropriate psychedelic imagery and various all...read more. | Music | 1 | 4.47 |
 | A Takaharu Shimizu original work about different hours of the day and what you do during them. | ONA | 1 | 5.42 |
 | Music video for the song Ohayou Crayon by Hiroko Taniyama that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Expressing a state of a simple weekday morning, this picture-drama good morning song celebrates the happiness of life. | Music | 1 | N/A |
 | Music video released by Mitchie M for the 10th Anniversary of Hatsune Miku. Part of the 10th Anniversary album "Re:Start." | Music | 1 | 7.06 |
 | Music video for the song Ohirune no Yurikago by Youko Ishida that was featured on NHK's Minna no Uta program. The video features artwork by Tetsuko Takahashi that was animated by Three-d. | Music | 1 | N/A |
 | Music video for the song Oira Kabuki no Nurarihyon by Gekidan Himawari, that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Oira ni Horecha Kega Suru ze! by Kazuki Enari that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Ojiichan Chi e Ikou by Kiyoshi Hikawa that was featured on NHK's Minna no Uta program. The video was animated by Kouji Nanke. | Music | 1 | N/A |
 | A music video for the song "Ojiichan no Komoriuta" by Yuuji Akimoto. Aired as part of NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Ojiichan tte Ii na by Mototsugu Jitou that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | A boy and his grandfather love playing trains at home. Even if it means he has to cut baseball practice early. | Music | 1 | 5.37 |
 | Music video for the song OK Shokudou by Guts Ishimatsu & Pocaskajan that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | It is a new school year at Maigahara Senior High School. As such, musically inclined students all across Japan aspiring to improve their talents come to study at this prestigious institution, partakin...read more. | Music | 1 | 5.42 |
 | Music video for the song Oka Shika Chika Ika Saka by Japanese band SAKANAMON that was featured on NHK's Minna no Uta program. The video was animated by Manabu Himeda. | Music | 1 | N/A |
 | Music video for the song Okaasan by YUSHIO. | Music | 1 | N/A |
 | An ekaki uta of the singer's mother's portrait. | Music | 1 | 5.23 |
 | A music video for Tani Yuuki's latest single Okaeri. | Music | 1 | N/A |
 | An original song by Eve, sung by Hatsune Miku, animated by Waboku. Eve's self-cover uses the same animated footage and was released on November 29, 2017. Eve included his self-cover MV on his own self...read more. | Music | 1 | 7.45 |
 | A song about rice. It's got a great taste, sometimes when you blow your nose a random grain comes out, other times you might step on a stray one dried up on the ground and for something so small it su...read more. | Music | 1 | N/A |
 | A music video for the song "Okoru yo!" by Tetsuo Miyoshi. Aired as part of NHK's Minna no Uta program. | Music | 1 | N/A |
 | Story about a singer/dancer. There is music and singing throughout almost the entire OVA. | OVA | 1 | 5.41 |
 | Music video for the song Omajinai by Wanuka that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Omoide ni Hanashikakete Mita by Kazuo Zaitsu that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | Music video for the song Omoide ni Tokenagara by Hikaru Nishida that was featured on NHK's Minna no Uta program. | Music | 1 | N/A |
 | This is a song meant for a kindergartener's graduation ceremony. Many tears will be shed this season for the students moving up to Junior high school, leaving 6 years of fun, frolic, and memories behi...read more. | Music | 1 | 4.89 |
 | NHK's Minna no Uta video animated by Yoshiyuki Takeguchi. | Music | 1 | N/A |
 | Music video for the song Omoide Onigiri by Miyuki Mori that was featured on NHK's Minna no Uta program. The video was animated by Seiichi Hayashi. | Music | 1 | N/A |
 | A release featuring two music videos for the songs Omoide Shite Kudasai by Sandwich and Tokei wo Tomete by Warabe. | Music | 1 | N/A |