Tsubouchi

Tsubouchi (written: 坪内) is a Japanese surname. Notable people with the surname include:


 * David Tsubouchi (坪内 デビト), Canadian politician
 * Shusuke Tsubouchi (坪内 秀介), Japanese footballer
 * Tsubouchi Shōyō (坪内 逍遥), Japanese writer