Tachileik District

Tachileik District (Burmese: ခရိုင်, Tachileik Hkăyaing, Shan: ၸႄႈတွၼ်ႈတႃႈၶီႈလဵၵ်း, Sàetàwn Tàkhìlêk) is the easternmost district of Myanmar, and is located in Shan State. It is bordered by Kengtung District and China's Yunnan Province to the north, Mong Hsat District to the west, Thailand's Chiang Rai Province to the south, and Laos to the east. It is the only division in southeast Asia to border three countries.

The capital is Tachileik, which is located in the south-west of the district on the Thai border. The district has a population of 339,415 people.