Douay is a surname. Notable people with the surname include:
Abel Douay (1809–1870), French general Félix Douay (1816–1879), French general and brother of Abel Douay
See also Douay–Rheims Bible, an English translation of the Bible, c.1600 Douai, a commune in northern France; the Douay spelling often refers to the English College, Douai Douay Catechism, a 1649 exposition of Catholic doctrine