The Lulonga (Swahili: Mto Lulonga, French: Rivière Lulonga, Dutch: Lulonga Rivier) is a river in the Equateur province of Democratic Republic of the Congo.

It is about 200 km long from its beginning at the town of Basankusu.

The Lopori and the Maringa join to form the Lulonga there.

The Lulonga River flows into the Congo River at the village of Lolanga.

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