The Sankuru River () is a major river in the Democratic Republic of the Congo. Its approximate length of 1,200 km"Sankuru River" in The New Encyclopædia Britannica. Chicago: Encyclopædia Britannica Inc., 15th edn., 1992, Vol. 10, p. 278. 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. It flows northwards and then westwards crossing through a few towns, most notably Lusambo. Then it enters the Kasai River near Bena-Bendi, at .

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