| Official Name: | Song Khwae |
| Native Name: | สองแคว |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Nan |
| Established Title: | District established |
| Population Total: | 11765 |
| Population As Of: | 2009 |
| Population Density Km2: | auto |
| Leader Title: | Marshal |
| Leader Name: | Ong-Ard Sangkahatthakorn |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 55160 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 5513 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 19.3597°N 100.7008°W |
Song Khwae (Thai: สองแคว, in Thai pronounced as /sɔ̌ːŋ kʰwɛ̄ː/) is a district (amphoe) in the northwestern part of Nan province, northern Thailand.
The minor district (king amphoe) Song Khwae was established on 1 April 1992 with three tambons split off from Chiang Klang district.[1] It was upgraded to a full district on 11 October 1997.[2]
Neighboring districts are, from the east clockwise, Thung Chang, Chiang Klang and Tha Wang Pha of Nan Province, Pong and Chiang Kham of Phayao province. To the north it borders Xaignabouli province of Laos.
The district is divided into three sub-districts (tambons), which are further subdivided into 25 villages (mubans). Yot is the township (thesaban tambon) and covers tambon Yot. There are a further two tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Na Rai Luang | นาไร่หลวง | 10 | 5,693 | ||
| 2. | Chon Daen | ชนแดน | 9 | 2,989 | ||
| 3. | Yot | ยอด | 6 | 2,825 |