| São Mateus do Maranhão | |
|---|---|
| Municipality | |
|
Location in Maranhão |
|
| Country |
|
| Region | Nordeste |
| State | Maranhão |
| Mesoregion | Centro Maranhense |
| Time zone | UTC -3 |
São Mateus do Maranhão is a municipality in the state of Maranhão in the Northeast region of Brazil.
The municipality contains a small part of the Baixada Maranhense Environmental Protection Area, a 1,775,035.6 hectares (4,386,208 acres) sustainable use conservation unit created in 1991 that has been a Ramsar Site since 2000.
Coordinates: 4°02′S 44°28′W / 4.033°S 44.467°W