- Country: Japan
- Genres: Animation, Comedy, Drama
- Release: 2009-04-02
- Director: N/A
- Writers: N/A
- Language: Japanese | English
- Stars: Aki Toyosaki , Yoko Hikasa , Satomi Sato , Minako Kotobuki , Lili Troncale , Catherine Fu , Cristina Valenzuela , Stephanie Sheh (I) , Cassandra Lee Morris , Shelby Lindley
- Runtime: 24 min
- Awards: 4 wins
- AKA: K-On! (Singapore) , K-On! , K-On! , Кэйон! (Russian Federation) , 轻音少女 (China) , K-On! (Canada) , K-On!! , K-On! (Ireland) , K-On!! , K-On!! (Japan) , けいおん! (Japan) , K-On! (South Africa) , K-On! (Japan) , K-On! (India) , K-On! , K-ON!!輕音部 (Taiwan) , K-On!! (New Zealand) , K-On!! (Australia) , けいおん!! (Japan) , K-On!! (United Kingdom) , K-On! (Australia) , K-On! (Hong Kong) , K-On! (New Zealand) , K-On! (Philippines) , K-ON!輕音部 (Taiwan) , K-On! (Poland) , K-On! (United Kingdom) , K-On! (Canada) , K-On! (Indonesia) , K-On! (Mexico) , K-On! , K-On! (India) , K-On!! , K-On!! (United States of America) , K-On! (Germany) , K-On! (United States of America)
- Plot: K-ON is about 5 high school girls who become friends through the Light Music Club. Yui the lead guitarist, Tsumugi the keyboardist, Mio the bassist, Azusa the rhythm guitarist, and Ritsu the drummer. K-ON is the story of 5 aspiring musicians and their journey through high school together.
- IMDB:tt1410218
K-On! Cast · · · ALL
Aki Toyosaki
Yui Hirasawa (voice)
Yoko Hikasa
Mio Akiyama (voice)
Minako Kotobuki
Tsumugi Kotobuki (voice)
Satomi Sato
Ritsu Tainaka (voice)
Ayana Taketatsu
Azusa Nakano (voice)
Chika Fujitou
Nodoka Manabe (voice)
Madoka Yonezawa
Ui Hirasawa (voice)
Asami Sanada
Sawako Yamanaka (voice)
Yoriko Nagata
Jun Suzuki (voice)