Wentworth is a small border town in the far south west of the state of New South Wales, Australia. It lies at the confluence of Australia's two most important rivers, the Darling and the Murray, the latter forming the border with the state of Victoria to the south. The border with the state of South Australia lies approximately 100 kilometres (62 mi) to the west. The town of Wentworth is in the local government area of the same name.

In geography, a confluence occurs where two or more watercourses join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river ; or where two streams meet to become the source of a river of a new name ; or where two separated channels of a river rejoin at the downstream end.