Tham Chalong

Tham Chalong (ถ้ำฉลอง, ) is a tambon (sub-district) of Mueang Uttaradit District, in Uttaradit Province, Thailand. In 2015 it had a population of 2,800 people.

History
The sub-district was created effective 1 August 1984 by splitting off three administrative villages from Hat Ngio.

Central administration
The tambon is divided into four administrative villages (muban).

Local administration
The area of the sub-district is covered by the sub-district administrative organization (SAO) Tham Chalong (องค์การบริหารส่วนตำบลถ้ำฉลอง).