| Barreirinhas | |
|---|---|
| Municipality | |
| Coordinates: 2°45′S 42°50′W / 2.750°S 42.833°W | |
| Country |
|
| Region | Nordeste |
| State | Maranhão |
| Mesoregion | Norte Maranhense |
| Population (2010 census) | |
| • Total | 54,930 |
| Time zone | UTC -3 |
Barreirinhas is a municipality in the state of Maranhão in the Northeast region of Brazil.
The municipality contains part of the 1,535,310 hectares (3,793,800 acres) Upaon-Açu/Miritiba/Alto Preguiças Environmental Protection Area, created in 1992.
The locality is served by the Barreirinhas Airport.