| Official Name: | Bang Si Thong Subdistrict |
| Native Name: | Thai: ตำบลบางสีทอง |
| Settlement Type: | Subdistrict |
| Subdivision Type: | Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Nonthaburi |
| Subdivision Type3: | District |
| Subdivision Name3: | Bang Kruai |
| Area Total Km2: | 5.8 |
| Area Footnotes: | [1] |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 11426 |
| Population Density Km2: | 1970 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Postal Code Type: | Postal code |
| Blank Name: | TIS 1099 |
Bang Si Thong (Thai: บางสีทอง, in Thai pronounced as /bāːŋ sǐː tʰɔ̄ːŋ/) is one of the nine subdistricts (tambon) of Bang Kruai District, in Nonthaburi Province, Thailand. The subdistrict is bounded by (clockwise from north) Bang Krang, Bang Si Mueang, Bang Phai, Bang Kruai, Wat Chalo and Bang Khanun subdistricts. In 2020, it had a total population of 11,426 people.[2]
The subdistrict is subdivided into 5 administrative villages (muban).[3]
| No. | Name | Thai | |
|---|---|---|---|
| 1. | Ban Wat Sai | บ้านวัดไทร | |
| 2. | Ban Wat Bang Oi Chang | บ้านวัดบางอ้อยช้าง | |
| 3. | Ban Wat Daeng Pracha Rat | บ้านวัดแดงประชาราษฎร์ | |
| 4. | Ban Wat Ruak Bang Si Thong | บ้านวัดรวกบางสีทอง | |
| 5. | Ban Bang Si Thong | บ้านบางสีทอง |
The whole area of the subdistrict is covered by Bang Si Thong Subdistrict Municipality (Thai: เทศบาลตำบลบางสีทอง).[1]