| Official Name: | Song Phi Nong |
| Native Name: | สองพี่น้อง |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Suphan Buri |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 127411 |
| Population As Of: | 2013 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 72110 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 7207 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 14.2236°N 100.0211°W |
Song Phi Nong (Thai: สองพี่น้อง, in Thai pronounced as /sɔ̌ːŋ pʰîː nɔ́ːŋ/) is the southernmost district (amphoe) of Suphan Buri province, central Thailand.
The district was established in 1896. In the past the area of the district included U Thong district. The district office was moved away from the Song Phi Nong canal to the present location in 1964 because the old location was prone to flooding.[1]
Its name Song Phi Nong means 'two siblings'. Presumably it refers to the confluence of two watercourses Tha Wa and Chorakhe Sam Phan before flowing to Tha Chin River. There is also another explanation that is a folk tale about two brothers or two elephants that are siblings.[2]
Neighboring districts are (from the north clockwise): U Thong and Bang Pla Ma of Suphan Buri Province; Lat Bua Luang of Ayutthaya province; Bang Len and Kamphaeng Saen of Nakhon Pathom province; and Tha Maka and Phanom Thuan of Kanchanaburi province.
The main water resource of the district is the Tha Chin River or Suphan River.
Song Phi Nong is divided into 15 subdistricts (tambons), which are further subdivided into 140 administrative villages (mubans).
| No. | Name | Thai | Villages | Pop.[3] | |
|---|---|---|---|---|---|
| 1. | Song Phi Nong | Thai: สองพี่น้อง | - | 12,894 | |
| 2. | Bang Len | Thai: บางเลน | 7 | 7,099 | |
| 3. | Bang Ta Then | Thai: บางตาเถร | 18 | 15,443 | |
| 4. | Bang Takhian | Thai: บางตะเคียน | 8 | 5,634 | |
| 5. | Ban Kum | Thai: บ้านกุ่ม | 6 | 3,488 | |
| 6. | Hua Pho | Thai: หัวโพธิ์ | 14 | 9,994 | |
| 7. | Bang Phlap | Thai: บางพลับ | 7 | 5,116 | |
| 8. | Noen Phra Prang | Thai: เนินพระปรางค์ | 5 | 4,428 | |
| 9. | Ban Chang | Thai: บ้านช้าง | 5 | 3,159 | |
| 10. | Ton Tan | Thai: ต้นตาล | 6 | 3,350 | |
| 11. | Si Samran | Thai: ศรีสำราญ | 14 | 11,199 | |
| 12. | Thung Khok | Thai: ทุ่งคอก | 16 | 16,103 | |
| 13. | Nong Bo | Thai: หนองบ่อ | 9 | 5,333 | |
| 14. | Bo Suphan | Thai: บ่อสุพรรณ | 18 | 19,031 | |
| 15. | Don Manao | Thai: ดอนมะนาว | 7 | 5,140 |
There is one town (thesaban mueang) in the district:
There is one subdistrict municipality (thesaban tambon) in the district:
There are 14 subdistrict administrative organizations (SAO) in the district: