The Rzav (, ) is a river in western Serbia and eastern Bosnia and Herzegovina. The 72 km long right tributary to the Drina river, it originates from two headstreams, the Crni Rzav and the Beli Rzav. The river is sometimes referred to as the Zlatiborski Rzav (Serbian Cyrillic: Златиборски Рзав; Rzav of Zlatibor).