| Official Name: | Khwao Sinarin |
| Native Name: | เขวาสินรินทร์ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Surin |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Khwao Sinarin |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 35394 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 32000 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3216 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.0022°N 103.5964°W |
Khwao Sinarin (Thai: เขวาสินรินทร์, in Thai pronounced as /kʰwǎw sìʔ.náʔ.rīn/, also locally in Thai pronounced as /kʰwǎw sǐn.nā.rīn/) is a district (amphoe) of Surin province, northeastern Thailand.
The minor district (king amphoe) was established on 15 July 1996 with area split from Mueang Surin district.[1]
On 15 May 2007, all 81 minor districts were upgraded to full districts.[2] On 24 August the upgrade became official.[3]
Neighboring districts are (from the north clockwise): Chom Phra, Sikhoraphum and Mueang Surin.
The district is divided into five sub-districts (tambons), which are further subdivided into 58 villages (mubans). There are no municipal (thesaban) areas. There are five tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Khwao Sinarin | เขวาสินรินทร์ | 11 | 10,466 | ||
| 2. | Bueng | บึง | 11 | 4,706 | ||
| 3. | Ta Kuk | ตากูก | 10 | 7,156 | ||
| 4. | Prasat Thong | ปราสาททอง | 13 | 6,543 | ||
| 5. | Ban Rae | บ้านแร่ | 13 | 6,437 |