Central Rio de Janeiro Atlantic Forest Mosaic, Protected area mosaic in Rio de Janeiro state, Brazil

The Central Rio de Janeiro Atlantic Forest Mosaic is a protected area mosaic in Rio de Janeiro state, inland and east of the city of Rio de Janeiro. As of 2010 it held 29 conservation units covering 295,723 hectares, with altitudes running from sea level at Guanabara Bay to 2,316 metres in the Três Picos State Park. Its 511 forest and mangrove fragments cover 177,557 hectares.

The Ministry of Environment established this network in 2006 to protect the Atlantic Forest within the Serra do Mar region and connect fragmented woodland areas. The initiative emerged from recognition that isolated forest patches required coordinated management to ensure their long-term survival.

The mosaic's name, Mosaico da Mata Atlântica Central Fluminense, uses fluminense, the Portuguese demonym for people and things from Rio de Janeiro state. Its 29 conservation units are managed under a strategic plan drawn up in 2010, which coordinates the individual units as one connected network.

The mosaic spans altitudes from sea level at Guanabara Bay to 2,316 metres in the Três Picos State Park, so conditions vary greatly between lowland and mountain sections. Mangroves are concentrated in the Guapimirim Environmental Protection Area and the Guanabara Ecological Station. Access is spread across 14 municipalities east of the city of Rio de Janeiro.

The mosaic's forest and mangrove remnants total 511 fragments covering 177,557 hectares, a fraction of the original cover. Its lowest ground lies at sea level on Guanabara Bay, while the highest point reaches 2,316 metres in the Três Picos State Park.