The following is a list of ecoregions in Laos as identified by the World Wide Fund for Nature (WWF).^[1][2]

Laos is in the Indomalayan realm. Ecoregions are sorted by biome.

• Luang Prabang montane rain forests
• Northern Annamites rain forests
• Northern Indochina subtropical forests
• Northern Khorat Plateau moist deciduous forests
• Northern Thailand-Laos moist deciduous forests
• Northern Vietnam lowland rain forests
• Southern Annamites montane rain forests

• Central Indochina dry forests
• Southeastern Indochina dry evergreen forests

The freshwater ecoregions of Laos include:

• Mekong

• Wikramanayake, Eric; Eric Dinerstein; Colby J. Loucks; et al. (2002). Terrestrial Ecoregions of the Indo-Pacific: a Conservation Assessment. Washington, DC: Island Press

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