| Official Name: | Na Yia |
| Native Name: | นาเยีย |
| 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: | Na Yia |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 24970 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 34160 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3429 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.0594°N 105.0603°W |
Na Yia (Thai: นาเยีย, in Thai pronounced as /nāː jīa/; นาเยีย, in Lao pronounced as /na᷇ː ɲi᷇a/) is a district (amphoe) in the central part of Ubon Ratchathani province, northeastern Thailand.
Na Yia was separated from Det Udom district to create a minor district (king amphoe) on 31 May 1993.[1]
On 15 May 2007, all 81 minor districts were upgraded to full districts.[2] On 24 August the upgrade became official.[3]
Neighboring districts are (from the north clockwise) Sawang Wirawong, Phibun Mangsahan, Det Udom and Warin Chamrap.
The district is divided into three sub-districts (tambons), which are further subdivided into 34 villages (mubans). Na Yia is a township (thesaban tambon) which covers parts of tambon Na Yia. There are a further three tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Na Yia | นาเยีย | 12 | 11,750 | ||
| 2. | Na Di | นาดี | 13 | 6,898 | ||
| 3. | Na Rueang | นาเรือง | 9 | 6,322 |