The O Du are an aboriginal ethnic group in Vietnam and Laos. Their total population is more than 570. The O Du are also commonly referred to as O'Du, O Du, Iduh, Tay Hat, Hat, and Haat. The O Du subsist mainly on slash and burn agriculture and raising cattle, augmented by hunting, gathering, and weaving. The O Du have a language also called O'du, which is a Khmuic language. The Khmuic languages are Austro-Asiatic.
Contributions by Badagnani, Kwamikagami, and Danny.