Masoala National Park, National park on Madagascar's northeastern coast.

Masoala National Park covers 2,300 km² of rainforest and 100 km² of marine park on the Masoala Peninsula in northeast Madagascar, plus a 520-hectare reserve on Nosy Mangabe. It holds tropical rainforest, coastal and flooded forest, marsh and mangrove, and three marine parks with coral reefs. The forest is so dense that 90% of light never reaches the ground.

The protected area was established in 1997 to preserve Madagascar's native species and habitats. In 2007, it was designated as part of the Rainforests of Atsinanana UNESCO World Heritage Site.

The Maroantsetra area's inhabitants call themselves Antimaroa, and the Betsimisaraka are the main people of the towns. Traditional ceremonies and festivals, the Tsaboraha, are accompanied by zebu slaughter. Fady taboos concerning the forest and ancestors are still respected; park managers must involve spiritual leaders so that protection measures do not conflict with them.

The park is best reached through the town of Maroantsetra, from where boats transport visitors to various sections. Physical preparation helps, as trails through wet areas and forests can be demanding.

The red ruffed lemur (Varecia variegata rubra) lives only on the Masoala peninsula, and the park's ten lemur species are all endemic to Madagascar. On Nosy Mangabe, many residents consider the nocturnal aye-aye a malevolent being, which makes hunting a threat alongside deforestation.