| Official Name: | Sam Ngao |
| Native Name: | สามเงา |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Tak |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Sam Ngao |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 32483 |
| Population As Of: | 2007 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 63130 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 6303 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 17.2433°N 99.0225°W |
Sam Ngao (Thai: สามเงา, in Thai pronounced as /sǎːm ŋāw/) with Tha Song Yang district is the northernmost district (amphoe) of Tak province, western Thailand.
The minor district (king amphoe) was established in 1930 as a subordinate of Ban Tak district. Originally named Tha Pui (ท่าปุย), it was renamed "Sam Ngao" in 1939.[1] It was upgraded to a full district in 1958.[2]
Neighboring districts are (south from clockwise): Ban Tak, Mae Ramat of Tak Province, Omkoi, Doi Tao of Chiang Mai province, Thung Hua Chang of Lamphun province, Mae Phrik and Thoen of Lampang province. The southwest end of the Phi Pan Nam Range reaches the eastern end of the district. The important water resources of the district are the Ping and Wang Rivers. The Bhumibol Dam is an artificial lake of the Ping River for flood control and for generating electricity.
Situated north-east of central Sam Ngao is Khuan Phumiphon Airport (also known as Phumipol or Bhumibol Dam Airport) operated by the Civil Government for mostly retail purposes. [3]
The district is divided into six sub-districts (tambons), which are further subdivided into 43 villages (mubans). Sam Ngao is a sub-district municipality (thesaban tambon) which covers parts of the tambon Sam Ngao. There are a further six tambon administrative organizations (TAO).
| No. | Name | Thai | Pop. | |
|---|---|---|---|---|
| 1. | Sam Ngao | สามเงา | 9,241 | |
| 2. | Wang Man | วังหมัน | 4,522 | |
| 3. | Yokkrabat | ยกกระบัตร | 8,200 | |
| 4. | Yan Ri | ย่านรี | 3,294 | |
| 5. | Ban Na | บ้านนา | 2,161 | |
| 6. | Wang Chan | วังจันทร์ | 5,065 |