| Official Name: | Thawi Watthana Subdistrict |
| Native Name: | Thai: ตำบลทวีวัฒนา |
| Settlement Type: | Subdistrict |
| Subdivision Type: | Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Nonthaburi |
| Subdivision Type3: | District |
| Subdivision Name3: | Sai Noi |
| Area Total Km2: | 23.65 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 8862 |
| Population Density Km2: | 374.71 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Postal Code Type: | Postal code |
| Blank Name: | TIS 1099 |
Thawi Watthana (Thai: ทวีวัฒนา, in Thai pronounced as /tʰā.wīː wát.tʰā.nāː/) is one of the seven subdistricts (tambon) of Sai Noi District, in Nonthaburi Province, Thailand. The subdistrict is bounded by (clockwise from north) Khun Si, Sai Noi, Phimon Rat, Bang Khu Rat, Nong Phrao Ngai and Naraphirom subdistricts. In 2020 it had a total population of 8,862 people.[1]
The subdistrict is subdivided into 8 administrative villages (muban).[2]
| No. | Name | Thai | |
|---|---|---|---|
| 1. | Ban Khlong Chao Thawi Watthana | บ้านคลองเจ้าทวีวัฒนา | |
| 2. | Ban Khlong Chao Thawi Watthana | บ้านคลองเจ้าทวีวัฒนา | |
| 3. | Ban Khlong Sam | บ้านคลองสาม | |
| 4. | Ban Khlong Song | บ้านคลองสอง | |
| 5. | Ban Khlong Nueng | บ้านคลองหนึ่ง | |
| 6. | Ban Khlong Masong | บ้านคลองมะสง | |
| 7. | Ban Khlong Ta Chom | บ้านคลองตาชม | |
| 8. | Ban Khlong Masong (Ban Plai Khlong Masong) | บ้านคลองมะสง (บ้านปลายคลองมะสง) |
The whole area of the subdistrict is covered by Thawi Watthana Subdistrict Administrative Organization (Thai: องค์การบริหารส่วนตำบลทวีวัฒนา).