Dau is a surname. Notable people with the surname include:
Association footballers Chok Dau (born 1998), South Sudanese footballer, plays for Perth RedStar and South Sudan Đậu Văn Toàn (born 1997), Vietnamese footballer, plays for Hà Nội Ratu Dau (born 2000), Fijian footballer, plays for Ba and Fiji Thomas Dau (born 1991), Austrian footballer, has played for various Austrian clubs
Others Carl Dau (born 1942), German designer Heinrich Dau (1790–1831), Holstein-Danish geologist and writer John Dau (born 1974), American/Sudanese activist, one of the Lost Boys of Sudan Ramiro Lopez Dau, film director and animator Stephen Dau (born 1971), American-Belgian writer Stephen Dhieu Dau, South Sudanese politician Wilfred Dau, Anglican cleric in Australia
See also Daus (surname)