Pai (ปาย) is a small town in Mae Hong Son Province, northwestern Thailand, ~135 km (84 mi) northwest of Chiang Mai and ~30 km from the Myanmar border.
Nestled in a mountain valley along the Pai River. Surrounded by rice paddies, hot springs, waterfalls (Mo Paeng, Sai Ngam), and limestone caves (Tham Lod). Elevation ~600 m—cooler than lowlands.
Shan (Tai Yai), Lisu, Lahu, Karen hill tribes + Thai + large expat/digital nomad community. Weekend walking street market = cultural crossroads.
Note: Overtourism concerns (waste, water, cultural dilution) have grown. Visit responsibly: support local, minimize plastic, respect quiet hours.