| Paracauari River | |
| Pushpin Map: | Brazil |
| Source1 Location: | Marajó island |
| Mouth Coordinates: | -0.7477°N -48.5104°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
| Tributaries Left: | Saco River |
The Paracauari River (Portuguese: Rio Paracauari) is a river on the island of Marajó in the state of Pará, Brazil.It discharges into the Marajó Bay at the mouth of the Tocantins River
The Paracauari rises in the northeast part of the island of Marajó.The north arm of the river is protected by the Soure Marine Extractive Reserve, a sustainable use conservation area created in 2001 that protects the coastal mangroves to the north of the Soure municipal seat and the mangroves along the north bank of the Paracauari River and its left (north) tributary the Saco River.The Paracauari flows into Marajó Bay, the mouth of the Tocantins River, at Soure, Pará.