| Official Name: | Don Mot Daeng, Thailand |
| Native Name: | ดอนมดแดง |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ubon Ratchathani |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Lao Daeng |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 26301 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 34000 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3424 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.3789°N 105.0272°W |
Don Mot Daeng (th|ดอนมดแดง, pronounced as /th/; tts|ดอนมดแดง, pronounced as /tts/) is a district (amphoe) in the central part of Ubon Ratchathani province, northeastern Thailand. The district is named after the island Don Mot Daeng in the Mun River.
The area of the district was split off from Mueang Ubon Ratchathani district and formed a minor district (king amphoe) on 1 April 1991.[1] It was upgraded to a full district on 5 December 1996.[2]
The name Don Mot Daeng meaning "upland of red ant".
Neighboring districts are (from the east clockwise) Tan Sum, Sawang Wirawong, Mueang Ubon Ratchathani, Lao Suea Kok and Trakan Phuet Phon of Ubon Ratchathani Province.
The important water resources are the Mun and Se Bok River.
The district is divided into four sub-districts (tambons), which are further subdivided into 46 villages (mubans). There are no municipal (thesaban) areas, and four tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Don Mot Daeng | ดอนมดแดง | 13 | 8,664 | ||
| 2. | Lao Daeng | เหล่าแดง | 13 | 6,924 | ||
| 3. | Tha Mueang | ท่าเมือง | 10 | 5,996 | ||
| 4. | Kham Hai Yai | คำไฮใหญ่ | 10 | 4,717 |