Pha Chuk () is a tambon (subdistrict) of Mueang Uttaradit District, in Uttaradit Province, Thailand. In 2019 it had a total population of 8,125 people.
The tambon is subdivided into 14 administrative villages (muban).
The whole area of the subdistrict is covered by the subdistrict municipality (Thesaban Tambon) Pha Chuk (à ¹Âà ¸Âà ¸¨à ¸Âà ¸²à ¸¥à ¸Âà ¸³à ¸Âà ¸¥à ¸Âà ¸²à ¸Âà ¸¸à ¸Â).