Madagascar lowland forests, Tropical rainforest ecoregion in eastern Madagascar.

The Madagascar lowland forests form a narrow strip of dense evergreen rainforest between the east coast and the central highlands, from sea level to 800 metres. The canopy exceeds 30 metres, with Dalbergia, Diospyros, Ocotea, Symphonia and Tambourissa, while Canarium, Albizia and Brochoneura acuminata rise above it. Pandanus, palms, bamboo and epiphytic orchids fill the understory.

Madagascar separated from other landmasses roughly 88 million years ago, and the eastern lowland forests evolved in that isolation; 80 to 90% of their plants and animals are endemic. Slash-and-burn clearing by shifting cultivators has since removed much of the original cover, and only about 10.79% of the ecoregion now lies in protected areas such as Masoala and Ranomafana national parks.

Local communities have long used these forests to gather medicinal plants and building materials, showing their deep connection to this ecosystem. These practices remain woven into the daily life and traditions of the people who live nearby.

Visiting these forests usually requires permission and is best arranged with local guides. The best time to visit depends on rainfall and the season, so checking ahead is helpful.

Of the 165 bird species recorded here, 42 are endemic to the region, among them the helmet vanga (Euryceros prevostii) with its large blue bill and the rare red-tailed newtonia (Newtonia fanovanae). Delalande's coua (Coua delalandei) has not been seen since the 19th century.