| Official Name: | Si Rattana |
| Native Name: | ศรีรัตนะ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sisaket |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Si Kaeo |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 51933 |
| Population As Of: | 2008 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 33240 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3314 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 14.7933°N 104.4697°W |
Si Rattana (Thai: ศรีรัตนะ, in Thai pronounced as /sǐ rát.tā.náʔ/) is a district (amphoe) in the central part of Sisaket province, northeastern Thailand.
Neighboring districts are (from the north clockwise): Phayu, Nam Kliang, Benchalak, Kantharalak, Khun Han and Phrai Bueng.
The minor district (king amphoe) was created on 5 March 1981, when the four tambons, Si Kaeo, Phing Phuai, Sa Yao, and Tum, were split off from Kantharalak district.[1] It was upgraded to a full district on 26 May 1989.[2]
The district is divided into seven sub-districts (tambons), which are further subdivided into 90 villages (mubans). Si Rattana is a sub-district municipality (thesaban tambon), which covers parts of tambons Si Kaeo and Saphung. There are a further seven tambon administrative organizations (TAO).
| No. | Name | Thai | Villages | Pop. | |
|---|---|---|---|---|---|
| 1. | Si Kaeo | ศรีแก้ว | 15 | 9,352 | |
| 2. | Phing Phuai | พิงพวย | 14 | 8,934 | |
| 3. | Sa Yao | สระเยาว์ | 14 | 7,325 | |
| 4. | Tum | ตูม | 12 | 8,769 | |
| 5. | Sueang Khao | เสื่องข้าว | 11 | 6,274 | |
| 6. | Si Non Ngam | ศรีโนนงาม | 10 | 4,598 | |
| 7. | Saphung | สะพุง | 14 | 6,681 |