- Country: Japan
- Genres: Animation, Comedy
- Release: 2015-08-08
- Director: N/A
- Writers: Fujio Akatsuka (1935–2008)
- Language: Japanese
- Stars: Ray Chase , Max Mittelman , Billy Kametz , Kyle McCarley , Michael Sinterniklaas , Sean Chiplock , Alex Cazares , Keith Silverstein , Cassandra Lee Morris , Cherami Leigh
- Runtime: 23 min
- Awards: 2 nominations
- AKA: Osomatsu-san (Brazil) , Osomatsu-san (United States of America) , Mr. Osomatsu (United Kingdom) , おそ松さん (Japan) , Mr. Osomatsu , Osomatsu-san
- Plot: The adventures of young Osomatsu Matsuno and his five sextuplet brothers.
- IMDB:tt4838372
Osomatsu-san Cast · · · ALL
Jun Fukuyama
Ichimatsu Matsuno
Aya Endo
Totoko
Yuichi Nakamura
Karamatsu Matsuno
Kazuhiko Inoue
Matsuzô Matsuno
Miyu Irino
Todomatsu
Hiroshi Kamiya
Choromatsu Matsuno
Sachi Kokuryu
Chibita
Kujira
Matsuyo Matsuno
Daisuke Ono
Juushimatsu Matsuno