| Official Name: | Mueang Roi Et |
| Native Name: | เมืองร้อยเอ็ด |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Roi Et |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 153567 |
| Population As Of: | 26 June 1993 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 45000 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4501 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 16.0533°N 103.6533°W |
Mueang Roi Et (Thai: เมืองร้อยเอ็ด, in Thai pronounced as /mɯ̄aŋ rɔ́ːj ʔèt/; เมืองร้อยเอ็ด, in Lao pronounced as /mɯ᷇aŋ lɔ̂ːj ʔět/) is the capital district (amphoe mueang) in the western part of Roi Et province, northeastern Thailand.
Mueang Roi Et is an ancient city. The area around the city was made into a district in 1908. In 1913 its name was changed from Pachin Roi Et to Mueang Roi Et.[1]
Neighboring districts are (from the north clockwise): Changhan, Chiang Khwan, Thawat Buri, At Samat, Mueang Suang (at a single point), Chaturaphak Phiman and Si Somdet of Roi Et Province; and Mueang Maha Sarakham of Maha Sarakham province.
The district is divided into 15 sub-districts (tambons), which are further subdivided into 195 villages (mubans). Roi Et is a town (thesaban mueang) which covers the whole of tambon Nai Mueang. There are a further 14 tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Nai Mueang | ในเมือง | - | 34,285 | ||
| 2. | Rop Mueang | รอบเมือง | 20 | 15,569 | ||
| 3. | Nuea Mueang | เหนือเมือง | 21 | 19,797 | ||
| 4. | Khon Kaen | ขอนแก่น | 14 | 7,310 | ||
| 5. | Na Pho | นาโพธิ์ | 10 | 4,718 | ||
| 6. | Sa-at Sombun | สะอาดสมบูรณ์ | 16 | 8,584 | ||
| 8. | Si Kaeo | สีแก้ว | 20 | 12,769 | ||
| 9. | Po Phan | ปอภาร (ปอพาน) | 13 | 7,547 | ||
| 10. | Non Rang | โนนรัง | 9 | 5,603 | ||
| 17. | Nong Kaeo | หนองแก้ว | 13 | 6,860 | ||
| 18. | Nong Waeng | หนองแวง | 15 | 8,137 | ||
| 20. | Dong Lan | ดงลาน | 13 | 7,755 | ||
| 23. | Khaen Yai | แคนใหญ่ | 11 | 4,439 | ||
| 24. | Non Tan | โนนตาล | 10 | 4,977 | ||
| 25. | Mueang Thong | เมืองทอง | 10 | 5,217 |