Dong Phayayen-Khao Yai Forest Complex


World Heritage Identification Number: 590

World Heritage since: 2005

Category: Natural Heritage

Transboundary Heritage: No

Endangered Heritage: No

Country: 🇹🇭 Thailand

Continent: Asia

UNESCO World Region: Asia and the Pacific

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A Biodiverse Haven: The Dong Phayayen-Khao Yai Forest Complex

The Dong Phayayen-Khao Yai Forest Complex, a designated UNESCO World Heritage Site since 2005, is a testament to Thailand's commitment to preserving its rich biodiversity. This expansive forest complex stretches over 230 kilometers, encompassing five protected areas within the Dong Phaya Yen Mountains and Sankamphaeng Range. These protected areas include Khao Yai, Thap Lan, Pang Sida, Ta Phraya National Parks, and Dong Yai Wildlife Sanctuary.

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UNESCO Description of the World Heritage Site

The Dong Phayayen-Khao Yai Forest Complex spans 230 km between Ta Phraya National Park on the Cambodian border in the east, and Khao Yai National Park in the west. The site is home to more than 800 species of fauna, including 112 mammal species (among them two species of gibbon), 392 bird species and 200 reptile and amphibian species. It is internationally important for the conservation of globally threatened and endangered mammal, bird and reptile species, among them 19 that are vulnerable, four that are endangered, and one that is critically endangered. The area contains substantial and important tropical forest ecosystems, which can provide a viable habitat for the long-term survival of these species.

UNESCO Justification of the World Heritage Site

Criterion (x): The Dong Phayayen-Khao Yai Forest Complex (DPKY-FC) contains more than 800 fauna species, including 112 species of mammals, 392 species of birds and 200 reptiles and amphibians. It is internationally important for the conservation of globally threatened and endangered mammal, bird and reptile species that are recognised as being of outstanding universal value. This includes 1 critically endangered, 4 endangered and 19 vulnerable species. The area contains the last substantial area of globally important tropical forest ecosystems of the Thailandian Monsoon Forest biogeographic province in northeast Thailand, which in turn can provide a viable area for long-term survival of endangered, globally important species, including tiger, elephant, leopard cat and banteng. The unique overlap of the range of two species of gibbon, including the vulnerable Pileated Gibbon, further adds to the global value of the complex. In addition to the resident species the complex plays an important role for the conservation of migratory species, including the endangered Spot-billed Pelican and critically endangered Greater Adjutant.

Encyclopedia Record: Dong Phayayen–Khao Yai Forest Complex

Dong Phayayen–Khao Yai Forest Complex is a UNESCO World Heritage Site in Thailand. It covers the areas of five protected areas in the Dong Phaya Yen Mountains and Sankamphaeng Range, namely Khao Yai, Thap Lan, Pang Sida and Ta Phraya National Parks, and Dong Yai Wildlife Sanctuary. The property was inscribed on the World Heritage list in 2005.

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Additional Site Details

Area: 615,500 hectares

UNESCO Criteria: (x) — Contains most important habitats for biodiversity

Coordinates: 14.33 , 102.05

Image

Image of Dong Phayayen-Khao Yai Forest Complex

© Jtri at Dutch Wikipedia, CC BY-SA 3.0 Resized from original. (This derivative is under the same CC BY-SA license.)

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Nearby World Heritage Sites

The Ancient Town of Si Thep and its Associated Dvaravati Monuments
159 km — Thailand
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160 km — Thailand
Angkor
217 km — Cambodia
Koh Ker: Archaeological Site of Ancient Lingapura or Chok Gargyar
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Country Information: Thailand

Flag of Thailand

Official Name: Kingdom of Thailand

Capital: Bangkok

Continent: Asia

Population (2024): 71,668,011

Population (2023): 71,702,435

Population (2022): 71,735,329

Land Area: 510,890 sq km

Currency: Thai baht (THB)

Country Data Sources

Last updated: January 18, 2026

Portions of the page Dong Phayayen-Khao Yai Forest Complex are based on data from UNESCO — World Heritage List Dataset and on text from the Wikipedia article Dong Phayayen–Khao Yai Forest Complex, licensed under CC BY-SA 4.0. Changes made. Additional original content by World Heritage Explorer (WHE), licensed under CC BY-SA 4.0. WHE is not affiliated with UNESCO or the World Heritage Committee. Legal Notice. Privacy Policy.

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