Mandanu or Madanu was a Mesopotamian god associated with justice. It has been proposed that he was a divine representation of places of judgment. He is known chiefly from sources postdating the Old Babylonian period, and older documents, such as the Nippur god list, do not mention him. He was worshiped mostly in the north of Babylonia, especially in the city of Babylon itself. He was regarded as one of the deities belonging to the circle of Marduk.