| Official Name: | Si That |
| Native Name: | ศรีธาตุ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Udon Thani |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Si That |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 47888 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 41230 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4109 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 16.9728°N 103.2167°W |
Si That (Thai: ศรีธาตุ, in Thai pronounced as /sǐː tʰâːt/) is a district (amphoe) in the southeastern Udon Thani province, northeastern Thailand.
Neighboring districts are (from the west clockwise) Kumphawapi, Ku Kaeo, Chai Wan and Wang Sam Mo of Udon Thani Province, and Tha Khantho of Kalasin province.
The minor district (king amphoe) Si That was created on 1 March 1968 by splitting off the five tambons Champi, Na Yung, Nong Ya Sai, Ban Prong, and Nong Kung Thap Ma from Kumphawapi district.[1] It was upgraded to a full district on 28 June 1973.[2]
The district is divided into seven sub-districts (tambons), which are further subdivided into 81 villages (mubans). Si That is a township (thesaban tambon) which covers parts of tambon Si That. There are a further seven tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Si That | ศรีธาตุ | 11 | 8,193 | ||
| 2. | Champi | จำปี | 17 | 7,977 | ||
| 3. | Ban Prong | บ้านโปร่ง | 11 | 5,549 | ||
| 4. | Hua Na Kham | หัวนาคำ | 14 | 10,602 | ||
| 5. | Nong Nok Khian | หนองนกเขียน | 7 | 4,445 | ||
| 6. | Na Yung | นายูง | 10 | 5,069 | ||
| 7. | Tat Thong | ตาดทอง | 11 | 6,053 |