Commewijne is a district of Suriname, located on the right bank of the Suriname River. Commewijne's capital city is Nieuw Amsterdam. Tamanredjo is another major town, while Meerzorg is the most populated.

The Suriname River is 480 kilometres (300 mi) long and flows through the country of Suriname. Its sources are located in the Guiana Highlands on the border between the Wilhelmina Mountains and the Eilerts de Haan Mountains. The source of the Upper Suriname River is at the confluence of the Gran Rio and Pikin Rio near the village of Goddo. The river continues shortly after the reservoir along Brokopondo as the Lower Suriname River. Than it flows Berg en Dal, the migrant communities Klaaskreek and Nieuw-Lombé, Jodensavanne, Carolina, Ornamibo and Domburg, before reaching the capital Paramaribo on the left bank and Meerzorg on the right bank. At Nieuw-Amsterdam it is joined by the Commewijne and immediately thereafter at the sandspit Braamspunt it flows into the Atlantic Ocean.