| Official Name: | Sawaeng Ha |
| Native Name: | แสวงหา |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ang Thong |
| Seat Type: | Seat |
| Seat: | Sawaeng Ha |
| Established Title: | District established |
| Established Date: | 1948 |
| Population Total: | 34734 |
| Population As Of: | 2008 |
| Population Density Km2: | auto |
| Area Total Km2: | 181.3 |
| Postal Code Type: | Postal code |
| Postal Code: | 14150 |
| Blank Name Sec1: | Geocode |
| Blank Info Sec1: | 1505 |
| Timezone: | ICT |
| Utc Offset: | +07:00 |
| Coordinates: | 14.7514°N 100.3247°W |
Sawaeng Ha (Thai: แสวงหา, in Thai pronounced as /sā.wɛ̌ːŋ hǎː/) is the northernmost district (amphoe) of Ang Thong province, central Thailand.
Sawaeng Ha in Thai language means 'seek' or 'find'.
The name of Tambon Sawaeng Ha was first found in the Ayutthaya Kingdom records.
In 1945 Tambon Si Bua Thong area was still a rural area covered by deep forest between the two provinces Suphan Buri and Sing Buri. This made it a popular hiding place for criminals. The government thus set up a commando division in Tambon Sawaeng Ha to sweep them up.
Effective January 1, 1948 the government upgraded the area to a minor district (king amphoe) by splitting five sub-districts from Pho Thong District.[1] In 1956 it was upgraded to a full district.[2]
Neighbouring districts are (from the north clockwise) Khai Bang Rachan and Tha Chang of Sing Buri province, Pho Thong of Ang Thong province, and Si Prachan, Sam Chuk and Doem Bang Nang Buat of Suphan Buri province.
The district is divided into seven sub-districts (tambons), which are further subdivided into 61 villages (mubans). Sawaeng Ha is also a sub-district municipality (thesaban tambon) which covers parts of the tambon Sawaeng Ha. There are a further seven tambon administrative organizations (TAO).
| No. | Name | Thai | Pop.[3] | |
|---|---|---|---|---|
| 1. | Sawaeng Ha | แสวงหา | 8,988 | |
| 2. | Si Phran | ศรีพราน | 2,494 | |
| 3. | Ban Phran | บ้านพราน | 4,833 | |
| 4. | Wang Nam Yen | วังน้ำเย็น | 6,520 | |
| 5. | Si Bua Thong | สีบัวทอง | 6,908 | |
| 6. | Huai Phai | ห้วยไผ่ | 2,707 | |
| 7. | Chamlong | จำลอง | 2,284 |