Itapecuru River should not be confused with Itapicuru River.
| Itapecuru River | |
| Pushpin Map: | Brazil |
| Source1 Location: | Serra da Crueira[1] |
| Source1 Elevation: | 530 m |
| Mouth Location: | Baía do Arraial[2] |
| Mouth Coordinates: | -2.7785°N -44.1571°W |
| Mouth Elevation: | 0 m |
| Subdivision Type1: | Country |
| Subdivision Name1: | Brazil |
| Length: | 1,041 km |
| Tributaries Left: | Alpercatas River |
The Itapecuru River (Portuguese: Rio Itapecuru) is a river in the Maranhão state of northern Brazil.
The Itapecuru originates in the southern part of the state, in the Serra do Itapecuru, which rises to, and flows northward to empty into Baía do Arraial, an arm of the larger Baía de São José.[2] It is an important source of water for twenty cities in Maranhão, including São Luís.Some of the headwaters of the river are protected by the Mirador State Park, created in 1980.