Trobriand Islands rain forests, Tropical moist broadleaf forest ecoregion in Milne Bay Province, Papua New Guinea

The Trobriand Islands rain forests form a tropical woodland system spread across several island groups in the Solomon Sea, including the D'Entrecasteaux archipelago, the Trobriand Islands, and Woodlark Island. The landscape consists of densely forested hills and lowland areas that support a wide array of plant and animal life.

These islands became separated from mainland New Guinea during the late ice age, allowing plants and animals to develop along their own paths over thousands of years. This long separation created conditions for specialized species to emerge that exist nowhere else.

The ecoregion's name comes from the Trobriand Islands, one of three island groups it covers; the others are the d'Entrecasteaux Islands and Woodlark Island. On Goodenough, Fergusson and Normanby the forest grows on acid soils, while the Trobriand and Woodlark islands sit on limestone. The curl-crested manucode lives on all three main d'Entrecasteaux islands and in the Trobriands.

The islands are remote and reachable mainly by boat or small aircraft, with access varying by season, especially during heavy rains. Visitors should plan visits with local guides who know the forest and communities, and expect basic conditions without many services.

The black dorcopsis (Dorcopsis atrata) is a forest wallaby found only on Goodenough Island, not a tree kangaroo. The ecoregion's four endemic mammals also include David's spiny bandicoot, the Woodlark cuscus and Tate's triok. Goldie's bird-of-paradise lives only on Fergusson and Normanby.