The Sandover River is an ephemeral river in the Northern Territory of Australia located in northeast Central Australia. It is the only major tributary of the Georgina River that does not rise in western Queensland. Instead it flows from the eastern Macdonnell Ranges, northward to enter the Georgina near Urandangi. The highest point in the catchment is Bald Hill at 996 metres (3,268 ft), but it enters the Georgina at altitudes below 200 metres (660 ft).