Kobun could refer to:
People Prince Ōtomo (648–672), posthumous title Emperor Kōbun, briefly ruler of the imperial Japanese court Kōbun Chino Otogawa (1938–2002), Japanese-born American Sōtō Zen priest Kōbun Shizuno (born 1972), Japanese anime film and television director Kōbun, a Japanese Yakuza who has taken a blood oath of allegiance to an oyabun, the head of a Yakuza clan
Other uses Kōbun (period), the timeframe of the brief reign of Emperor Kōbun Another name for Classical Japanese, the literary form of the Japanese language that was the standard until the early Shōwa period The original Japanese name of Servbot, an advertising character for video game developer Capcom