| Official Name: | Ton Thong Chai |
| Native Name: | ต้นธงชัย |
| Settlement Type: | Subdistrict |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type2: | Province |
| Subdivision Name2: | Lampang |
| Subdivision Type3: | District |
| Subdivision Name3: | Mueang Lampang District |
| Population As Of: | 2005 |
| Population Total: | 15093 |
| Timezone: | ICT |
| Utc Offset: | +7 |
Ton Thong Chai (Thai: ต้นธงชัย) is a village and tambon (subdistrict) of Mueang Lampang District, in Lampang Province, Thailand.[1] In 2005 it had a population of 15,093 people. It contains 13 villages.