| Official Name: | Wang Sam Mo |
| Native Name: | วังสามหมอ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Udon Thani |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Phasuk |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 55730 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 41280 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4110 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 16.9497°N 103.4286°W |
Wang Sam Mo (Thai: วังสามหมอ, in Thai pronounced as /wāŋ sǎːm mɔ̌ː/) is a district (amphoe) in southeastern Udon Thani province, northeastern Thailand.
Neighboring districts are (from the west clockwise) Si That and Chai Wan of Udon Thani Province, Waritchaphum, Nikhom Nam Un, and Kut Bak of Sakon Nakhon province and Kham Muang, Sam Chai, and Nong Kung Si and Tha Khantho of Kalasin province.
The minor district (king amphoe) Wang Sam Mo was established on 1 October 1975, when the three tambons Nong Kung Thap Ma, Ba Yao, and Nong Ya Sai were split off from Si That district.[1] It was upgraded to a full district on 13 July 1981.[2]
The district is divided into six sub-districts (tambons), which are further subdivided into 72 villages (mubans). Wang Sam Mo is a sub-district municipality (thesaban tambon) which covers parts of tambon Wang Sam Mo. Phasuk is a sub-district municipality which covers the whole same-named tambon. There are a further five tambon administrative organizations (TAO).
| No. | Name | Thai | Villages | Pop.[3] | |
|---|---|---|---|---|---|
| 1. | Nong Kung Thap Ma | หนองกุงทับม้า | 11 | 7,922 | |
| 2. | Nong Ya Sai | หนองหญ้าไซ | 9 | 7,649 | |
| 3. | Ba Yao | บะยาว | 12 | 9,441 | |
| 4. | Phasuk | ผาสุก | 18 | 15,421 | |
| 5. | Kham Khok Sung | คำโคกสูง | 9 | 5,615 | |
| 6. | Wang Sam Mo | วังสามหมอ | 13 | 11,683 |