​HAY, a town of Waradgery county, New South Wales, Australia, on the Murrumbidgee river, 454 m. by rail W.S.W. of Sydney. Pop. (1901), 3012. It is the cathedral town of the Anglican diocese of Riverina, the terminus of the South Western railway, and the principal depot for the wool produced at the numerous stations on the banks of the Murrumbidgee and Lachlan rivers.