The Sankuru River (Swahili: Mto Sankuru) is a major river in the Democratic Republic of the Congo. Its approximate length of 1,200 km[1] makes it the longest tributary of the Kasai River.
Above the confluence with its tributary Mbuji-Mayi it is also known as Lubilash or Lubilanji.[1] It flows northwards and then westwards crossing through a few towns, most notably Lusambo. Then it enters the Kasai River near Bena-Bendi, at .