| Official Name: | Nong Sung |
| Native Name: | หนองสูง |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: |  Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Mukdahan |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Nong Sung Nuea |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 20874 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 49160 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4907 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 16.4867°N 104.3444°W |
Nong Sung (th|หนองสูง, pronounced as /th/) is a district (amphoe) of Mukdahan province, northeastern Thailand.
Neighboring districts are (from the north clockwise) Khamcha-i, Mueang Mukdahan, and Nikhom Kham Soi of Mukdahan Province; Loeng Nok Tha of Yasothon province; Nong Phok of Roi Et province; and Kuchinarai of Kalasin province.
The minor district (king amphoe) was established on 1 March 1985, when five tambons were split off from Khamcha-i district.[1] It was upgraded on 3 November 1993.[2]
The district is divided into six sub-districts (tambon), which are further subdivided into 44 villages (muban). There are no municipal (thesaban) areas, and five tambon administrative organization (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Nong Sung | หนองสูง | 5 | 1,795 | ||
| 2. | Non Yang | โนนยาง | 10 | 5,900 | ||
| 3. | Phu Wong | ภูวง | 7 | 2,639 | ||
| 4. | Ban Pao | บ้านเป้า | 6 | 3,723 | ||
| 5. | Nong Sung Tai | หนองสูงใต้ | 8 | 3,956 | ||
| 6. | Nong Sung Nuea | หนองสูงเหนือ | 8 | 2,861 |