| Official Name: | Wiang Chiang Rung |
| Native Name: | เวียงเชียงรุ้ง |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chiang Rai |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Thung Ko |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 26531 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 57210 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 5717 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 20.0131°N 100.0569°W |
Wiang Chiang Rung (th|เวียงเชียงรุ้ง, pronounced as /th/; nod|เวียงเจียงฮุ้ง, pronounced as /wīaŋ tɕīaŋ húŋ/) is a district (amphoe) of Chiang Rai province, northern Thailand.
Neighboring districts are (from the west clockwise) Mueang Chiang Rai, Doi Luang, Chiang Khong, Phaya Mengrai and Wiang Chai of Chiang Rai Province.
The minor district (king amphoe) was established on 1 April 1995, when it was split off from Wiang Chai district.[1] At first named Chiang Rung, it was renamed Wiang Chiang Rung on 1 March 1996.[2]
On 15 May 2007, all 81 minor districts were upgraded to full districts.[3] With publication in the Royal Gazette on 24 August the upgrade became official.[4]
The district is divided into three sub-districts (tambons), which are further subdivided into 43 villages (mubans). Ban Lao is a township (thesaban tambon) which covers parts of tambons Thung Ko and Dong Maha Wan. There are a further three tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Thung Ko | ทุ่งก่อ | 15 | 10,227 | ||
| 2. | Dong Maha Wan | ดงมหาวัน | 12 | 6,435 | ||
| 3. | Pa Sang | ป่าซาง | 16 | 9,869 |