Tatsui may refer to:
Tatsui village (龍井庄), village in Taichū Prefecture during Japanese rule Baba Tatsui (1850–1888), Japanese legislative reformer Matsunosuke Tatsui (龍居松之助, 1884–1961) Yukari Tatsui, Japanese writer Longjing District (龍井區), the name of which was changed to Tatsui during Japanese rule