| Official Name: | Nong Mamong |
| Native Name: | หนองมะโมง |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chai Nat |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Nong Mamong |
| Established Title: | District established |
| Established Date: | 1996 |
| Population Total: | 19330 |
| Population As Of: | 2008 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 17100 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 1807 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.2767°N 99.8667°W |
Nong Mamong (Thai: หนองมะโมง) is the northwesternmost district (amphoe) of Chai Nat province, central Thailand.
Neighboring districts are (from the east clockwise) Wat Sing and Hankha of Chainat Province, Ban Rai, Huai Khot, Nong Chang and Nong Khayang of Uthai Thani province.
The minor district (king amphoe) was established on 15 July 1996 with four tambons split off from Wat Sing district.[1]
On 15 May 2007, all 81 minor districts were upgraded to full districts.[2] With publication in the Royal Gazette on 24 August the upgrade became official.[3]
The district is divided into four sub-districts (tambons), which are further subdivided into 42 villages (mubans). There are no municipal (thesaban) areas, and a further four tambon administrative organizations (TAO).
| No. | Name | Thai | Pop.[4] | ||
|---|---|---|---|---|---|
| 1. | Nong Mamong | หนองมะโมง | 12 | 5,179 | |
| 2. | Wang Takhian | วังตะเคียน | 14 | 6,596 | |
| 3. | Saphan Hin | สะพานหิน | 10 | 5,130 | |
| 4. | Kut Chok | กุดจอก | 6 | 2,425 |