List of ecoregions in Papua New Guinea

The following is a list of ecoregions in Papua New Guinea, as identified by the Worldwide Fund for Nature (WWF).

Terrestrial ecoregions
Papua New Guinea is in the Australasian realm. Ecoregions are listed by biome.

Tropical and subtropical moist broadleaf forests

 * Admiralty Islands lowland rain forests
 * Central Range montane rain forests
 * Huon Peninsula montane rain forests
 * Louisiade Archipelago rain forests
 * New Britain-New Ireland lowland rain forests
 * New Britain-New Ireland montane rain forests
 * Northern New Guinea lowland rain and freshwater swamp forests
 * Northern New Guinea montane rain forests
 * Solomon Islands rain forests
 * Southeastern Papuan rain forests
 * Southern New Guinea freshwater swamp forests
 * Southern New Guinea lowland rain forests
 * Trobriand Islands rain forests

Tropical and subtropical grasslands, savannas, and shrublands

 * Trans-Fly savanna and grasslands

Montane grasslands and shrublands

 * Central Range sub-alpine grasslands

Mangrove ecoregions

 * New Guinea mangroves

Freshwater ecoregions

 * Bismark Archipelago
 * New Guinea Central Mountains
 * New Guinea North Coast
 * Papuan Peninsula
 * Solomon Islands
 * Southwest New Guinea – Trans-Fly Lowland

Eastern Coral Triangle

 * Bismarck Sea
 * Solomon Archipelago
 * Solomon Sea
 * Southeast Papua New Guinea

Sahul shelf

 * Gulf of Papua
 * Arafura Sea