The Mekong River is the longest river in Southeast Asia. It's about 4,900 kilometers long and flows from the Tibetan Plateau in China through Myanmar, Lao PDR, Thailand, Cambodia, and Viet Nam. The Mekong is also the seventh-longest river in Asia and the twelfth-longest in the world. The Mekong River is fed by melting snow from the Himalayas. It gathers more water as it travels through the gorges of mountains in China's Yunnan province. It also fills up when passing the Golden Triangle in Thailand and the Khone Falls in Laos. Finally, the Mekong empties into the Mekong Delta. The Mekong River's name varies from country to country, but it is most recognized outside of Asia by its Chinese name. Quora Quora Britannica Mekong River: All about Southeast Asia's longest river - Vinpearl Aug 30, 2023 Vinpearl Geography - Mekong River Commission Mekong River Commission Longest Rivers in Asia - American Oceans American Oceans Mekong River | Facts, Definition, Map, History, & Location 6 days ago Britannica What is the longest river in southeast Asia? - Study.com Study.com The Longest Rivers Of Asia - WorldAtlas Oct 5, 2020 World Atlas Ask a follow up Longest river in the world Second longest river in Asia Is the Nile river the longest river in Asia?