Tsutsui (written: 筒井 meaning "round well") is a Japanese surname. Notable people with the surname include:
, Japanese artist , Japanese warrior monk , Japanese daimyō , Japanese daimyō , Japanese baseball player , Japanese volleyball player , Japanese politician , Japanese footballer Ryohei Ron Tsutsui (born 1977), Japanese film producer , Japanese samurai Shan Tsutsui (born 1971), American politician William Tsutsui, American academic , Japanese writer and actor
See also Tsutsui clan, Japanese clan Tsutsui Station (disambiguation), multiple railway stations in Japan