Koolpinyah is a locality in the Northern Territory of Australia located about 37 kilometres (23 mi) east of the territory capital of Darwin.

[1][3] The locality consists of land bounded to the east by the Adelaide River and in part to the north by the Clarence Strait.

This locality is named after Koolpinyah Station, a pastoral lease established on land now partly included in the locality in 1908 by Evan and Oscar Herbert, the sons of Charles Edward Herbert, a judge, a politician and a former Government Resident of the Northern Territory.

[7][1] The 2016 Australian census which was conducted in August 2016 reports that Koolpinyah had no people living within its boundaries.

[2] Koolpinyah is located within the federal division of Lingiari, the territory electoral division of Goyder and within the local government area of the Litchfield Municipality.