Osanai

Osanai (written: 小山内 or 長内) is a Japanese surname. Notable people with the surname include:


 * Kaoru Osanai (小山内 薫), Japanese theatre director, playwright and actor
 * Mamo Osanai (小山内 護), Japanese golfer
 * Seiichi Osanai (長内 清一), Japanese sport wrestler
 * Takaya Osanai (小山内 貴哉), Japanese footballer

Fictional characters

 * Kirihito Osanai (小山内 桐人) protagonist of the manga series Ode to Kirihito
 * Shōko Osanai (小山内 梢子), protagonist of the visual novel Aoi Shiro