| Official Name: | Tham Chalong |
| Native Name: | ถ้ำฉลอง |
| Settlement Type: | Tambon |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type2: | Province |
| Subdivision Name2: | Uttaradit |
| Subdivision Type3: | District |
| Subdivision Name3: | Mueang Uttaradit |
| Population As Of: | 2015 |
| Population Total: | 2,800 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Postal Code Type: | Postal code |
| Blank Name: | TIS 1099 |
Tham Chalong (Thai: ถ้ำฉลอง, in Thai pronounced as /tʰâm t͡ɕʰā.lɔ̌ːŋ/) is a tambon (sub-district) of Mueang Uttaradit District, in Uttaradit Province, Thailand. In 2015 it had a population of 2,800 people.[1]
The sub-district was created effective 1 August 1984 by splitting off three administrative villages from Hat Ngio.[2]
The tambon is divided into four administrative villages (muban).
| No. | Name | Thai | |
|---|---|---|---|
| 1. | Ban Nong Phai | บ้านหนองไผ่ | |
| 2. | Ban Huai Chalong | บ้านห้วยฉลอง | |
| 3. | Ban Wang Tham | บ้านวังถ้ำ | |
| 4. | Ban Ton Tong | บ้านต้นต้อง |
The area of the sub-district is covered by the sub-district administrative organization (SAO) Tham Chalong (องค์การบริหารส่วนตำบลถ้ำฉลอง).