Alcântara is a Brazilian municipality in the state of Maranhão. The city has a population of 22,112 (2020) and an area of 1458 km2. The municipality is 30 km away from the state's capital, São Luís.

The Baixada Maranhense Environmental Protection Area is an environmental protection area in the state of Maranhão, Brazil. It includes large areas of wetlands, and was designated a Ramsar site in 2000. The traditional population lives in the area, but human activities are regulated in an effort to preserve the environment.