| Official Name: | At Samat |
| Native Name: | อาจสามารถ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Roi Et |
| Subdivision Type2: | Seat |
| Subdivision Name2: | At Samat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 74333 |
| Population As Of: | 2015 |
| Population Density Km2: | 164.4 |
| Area Total Km2: | 454.4 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 45160 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4514 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.8436°N 103.8789°W |
At Samat (Thai: อาจสามารถ, in Thai pronounced as /ʔàːt sǎː.mâːt/) is a district (amphoe) of Roi Et province, Thailand.
The district is in central Roi Et Province. Neighboring districts are (from the north clockwise): Thawat Buri, Thung Khao Luang, Selaphum, Phanom Phrai, Suwannaphum, Mueang Suang, Chaturaphak Phiman (at a single point) and Mueang Roi Et.
The district was created in 1897, at first named Sa But (สระบุศย์). In 1913 it was renamed At Samat.[1]
In January 2006 Prime Minister Thaksin Shinawatra chose At Samat as the model district for his poverty eradication program. He visited the district and led a five-day workshop. The event was shown as a reality TV show named Backstage: The Prime Minister.
The At Samat District is divided into 10 sub-districts (tambons), which are further subdivided into 139 administrative villages (mubans).
| No. | Name | Thai | Villages | Pop.[2] | |
|---|---|---|---|---|---|
| 1. | At Samat | Thai: อาจสามารถ | 17 | 10,963 | |
| 2. | Phon Mueang | Thai: โพนเมือง | 17 | 9,191 | |
| 3. | Ban Chaeng | Thai: บ้านแจ้ง | 9 | 5,540 | |
| 4. | Nom | Thai: หน่อม | 13 | 6,904 | |
| 5. | Nong Muen Than | Thai: หนองหมื่นถ่าน | 17 | 9,192 | |
| 6. | Nong Kham | Thai: หนองขาม | 19 | 10,318 | |
| 7. | Hora | Thai: โหรา | 14 | 7,682 | |
| 8. | Nong Bua | Thai: หนองบัว | 10 | 4,232 | |
| 9. | Khilek | Thai: ขี้เหล็ก | 12 | 4,717 | |
| 10. | Ban Du | Thai: บ้านดู่ | 11 | 5,594 |
There are two sub-district municipalities (thesaban tambons) in the district:
There are nine sub-district administrative organizations (SAO) in the district: