| Official Name: | Nong Yai |
| Native Name: | หนองใหญ่ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chonburi |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Nong Yai |
| Subdivision Type3: | Tambon |
| Subdivision Name3: | 5 |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 23609 |
| Population As Of: | 2015 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 20190 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 2003 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 13.1567°N 101.3667°W |
Nong Yai (Thai: หนองใหญ่, in Thai pronounced as /nɔ̌ːŋ jàj/) is a district (amphoe) in the province Chonburi, Thailand.
The minor district (king amphoe) Nong Yai was created on 1 December 1975. The three tambons, Nong Yai, Khlong Phlu, and Nong Suea Chang were split off from Ban Bueng district.[1] It was upgraded to a full district on 13 July 1981.[2]
Neighboring districts are (from the south clockwise) Wang Chan and Pluak Daeng of Rayong province, Si Racha, Ban Bueng and Bo Thong of Chonburi Province.
The district is divided into five sub-districts (tambons), which are further subdivided into 24 villages (mubans). Nong Yai is a township (thesaban tambon) which covers the whole tambon Nong Yai. There are a further four tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Nong Yai | หนองใหญ่ | 6 | 7,530 | ||
| 2. | Khlong Phlu | คลองพลู | 4 | 3,645 | ||
| 3. | Nong Suea Chang | หนองเสือช้าง | 5 | 4,106 | ||
| 4. | Hang Sung | ห้างสูง | 5 | 3,333 | ||
| 5. | Khao Sok | เขาซก | 4 | 3,370 |