Phayao is a town in northern Thailand, capital of Phayao Province. The town is divided into the sub-districts of Mae Tam and Wiang, tambon of Mueang Phayao District.
The town is on the shore of the Phayao Lake. It dates back to the semi-independent city-state, founded between 900-1,000 years ago.As of 2005 Phayao had a population of 19,118. Phayao lies 726 km north of Bangkok.
Coordinates 19°9'59.872" N 99°54'6.992" E