Koolatong River

 ( Rivers Of The Northern Territory ) 

The Koolatong River is a river in the Northern Territory, Australia.

Rising in the Mitchell Ranges the river initially flows north then turns east across the uninhabited plains eventually discharging into the Saint Nicholas Inlet and the Blue Mud Bay then into the Gulf of Carpentaria.

The catchment occupies an area of and is situated between the Buckingham River catchment to the north, the Walker River catchment to the south and the Goyder River catchment to the west. The river has a mean annual outflow of .

The estuary formed at the river mouth is in near pristine condition. The estuary occupies an area of of open water. It is river dominated in nature with a tide dominated delta having a single channel and is surrounded by an area of covered with .

The traditional owners of the area are the Murngin, also known as the Yolngu peoples.

• List of rivers of Northern Territory