| Official Name: | Non Sung |
| Native Name: | โนนสูง |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Nakhon Ratchasima |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Non Sung |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 127,178 |
| Population As Of: | 2012 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 30160, 30420 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3010 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.18°N 102.2569°W |
Non Sung (Thai: โนนสูง, in Thai pronounced as /nōːn sǔːŋ/) is a district (amphoe) in the central part of Nakhon Ratchasima province, northeastern Thailand.
The old name of the district was Klang. The word klang in Thai means 'middle', which refers to the location of the district between the Nok District (now Bua Yai District) and Nai District (Mueang Nakhon Ratchasima District).
When Thai people had to choose a family name at the beginning of the 20th century, many of the locals created names with the word klang.
The district's name was changed from Non Wat to Non Sung in 1939.[1]
Neighbouring districts are (from the north clockwise) Khong, Phimai, Chakkarat, Chaloem Phra Kiat, Mueang Nakhon Ratchasima, Non Thai, and Kham Sakaesaeng.
Ban Non Wat, a village in the district, is an important Bronze Age archaeological site.
The district is divided into 16 sub-districts (tambons). There are seven townships (thesaban tambons) within the district: Non Sung covers tambon Non Sung; Talat Khae covers parts of tambon Than Prasat; Don Wai covers tambon Don Wai; Makha covers tambon Makha; Dan Khla covers tambon Dan Khla; Mai covers tambon Mai; and Ho Kham covers tambon Ho Kham.
| 1. | Non Sung | โนนสูง | ||
| 2. | Mai | ใหม่ | ||
| 3. | Tanot | โตนด | ||
| 4. | Bing | บิง | ||
| 5. | Don Chomphu | ดอนชมพู | ||
| 6. | Than Prasat | ธารปราสาท | ||
| 7. | Lum Khao | หลุมข้าว | ||
| 8. | Makha | มะค่า | ||
| 9. | Phon Songkhram | พลสงคราม | ||
| 10. | Chan-at | จันอัด | ||
| 11. | Kham Thao | ขามเฒ่า | ||
| 12. | Dan Khla | ด่านคล้า | ||
| 13. | Lam Kho Hong | ลำคอหงษ์ | ||
| 14. | Mueang Prasat | เมืองปราสาท | ||
| 15. | Don Wai | ดอนหวาย | ||
| 16. | Lam Mun | ลำมูล |