Kokubo (written: , or ) is a Japanese surname. Notable people with the surname include:
Christina Kokubo (1950–2007), American actress , Japanese baseball player , Japanese snowboarder Leo Kokubo (born 2001), Japanese footballer , Japanese baseball player
See also Kokubo Station, a railway station in Kōfu, Yamanashi Prefecture, Japan Shusei Kokubou (Static Defense), slogan of the Imperial Japanese Navy