Demerara River

The Demerara River is a river in eastern Guyana that rises in the central rainforests of the country and flows to the north for 346 kilometres until it reaches the Atlantic Ocean. Georgetown, Guyana's largest seaport and capital, is situated on the east bank of the river's mouth. The river divides Essequibo Islands-West Demerara (Region 3) on the west bank from Demerara-Mahaica (Region 4) to the east.

The name "Demerara" comes from a variant of the Arawak word "Immenary" or "Dumaruni" which means "river of the letter wood" (wood of Brosimum guianense tree).