Guapi-Mirim Environmental Protection Area, Environmental protection area in Rio de Janeiro, Brazil.

Guapi-Mirim Environmental Protection Area is a 13,926-hectare coastal marine protected area on Guanabara Bay, created on 25 September 1984 and administered by the Chico Mendes Institute for Biodiversity Conservation. It spans parts of Guapimirim, Itaboraí, Magé and São Gonçalo, and contains the 1,936-hectare Guanabara Ecological Station, which protects one of the last sections of midsize contiguous mangrove in Rio de Janeiro state.

The Guapimirim Environmental Protection Area was created on 25 September 1984, covering 13,926 hectares across parts of Guapimirim, Itaboraí, Magé and São Gonçalo. In 2006 it was placed within the Central Rio de Janeiro Atlantic Forest Mosaic, and the strictly protected Guanabara Ecological Station was created that year to safeguard one of the state's last midsize contiguous mangrove areas. It is administered by the Chico Mendes Institute for Biodiversity Conservation.

Fishing communities here practice traditional methods in designated areas, maintaining a way of life deeply connected to the marine environment. This work shapes the local identity and shows how people have relied on these waters for generations.

The area covers parts of Guapimirim, Itaboraí, Magé and São Gonçalo, and is run by the Chico Mendes Institute for Biodiversity Conservation. The 1,936-hectare Guanabara Ecological Station inside it is strictly protected, so check access rules before planning a visit to the mangroves.

The mangrove forest here is among the largest continuous sections in Rio de Janeiro, spanning about 2,000 hectares of protected woodland. This dense forest type is rare to find in the bay and provides home to hundreds of animal species.