 Phichai District

Phichai (, ) is the southernmost district ("amphoe") of Uttaradit Province, northern Thailand.Neighboring districts are (from the north clockwise) Tron, Thong Saen Khan of Uttaradit Province, Wat Bot, Phrom Phiram of Phitsanulok Province, Sawankhalok and Si Nakhon of Sukhothai Province

"Mueang" Phichai is believed to have been built in the 15th century on order of King Trailokanat as a frontier town fortified with a wall and moat.