| Official Name: | Sai Ma Subdistrict |
| Native Name: | Thai: ตำบลไทรม้า |
| Settlement Type: | Subdistrict |
| Subdivision Type: | Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Nonthaburi |
| Subdivision Type3: | District |
| Subdivision Name3: | Mueang Nonthaburi |
| Area Total Km2: | 8.14 |
| Area Footnotes: | [1] |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 23742 |
| Population Density Km2: | 2916.71 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Postal Code Type: | Postal code |
| Blank Name: | TIS 1099 |
Sai Ma (th|ไทรม้า, pronounced as /th/) is one of the ten subdistricts (tambon) of Mueang Nonthaburi District, in Nonthaburi Province, Thailand. Neighbouring subdistricts are (from north clockwise) Tha It, Bang Kraso, Suan Yai (across the Chao Phraya River), Bang Si Mueang, Bang Krang and Bang Rak Noi. In 2020 it had a total population of 23,742 people.[2]
The subdistrict is subdivided into 6 administrative villages (muban).[3]
| No. | Name | Thai | |
|---|---|---|---|
| 1. | Ban Wat Daeng | บ้านวัดแดง | |
| 2. | Ban Khlong Bang Kamlang | บ้านคลองบางกำลัง | |
| 3. | Ban Khlong Lum Madan | บ้านคลองหลุมมะดัน | |
| 4. | Ban Sai Ma Nuea | บ้านไทรม้าเหนือ | |
| 5. | Ban Sai Ma Tai | บ้านไทรม้าใต้ | |
| 6. | Ban Bang Pradu | บ้านบางประดู่ |
The whole area of the subdistrict is covered by Sai Ma Town Municipality (Thai: เทศบาลเมืองไทรม้า).