The Fwa (French: Rivière Fwa) is a river in the Democratic Republic of the Congo in central Africa, flowing through Kasai-Oriental province.

The river is a tributary of the Lubi River, which is a tributary to the Sankuru River, in the southeastern Congo River drainage basin.

The river is particularly notable for its diverse community of fish.

This community includes five endemic cichlid species: Cyclopharynx fwae, C. schwetzi, Schwetzochromis neodon, Thoracochromis brauschi and T. callichromus.

This article related to a river in the Democratic Republic of the Congo is a stub.