| Official Name: | Na Khu |
| Native Name: | นาคู |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kalasin |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Na Khu |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 31,510 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 46250 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 4616 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 16.7569°N 104.0083°W |
Na Khu (th|นาคู, pronounced as /th/) is a district (amphoe) in the eastern part of Kalasin province, northeastern Thailand.
Neighboring districts are (from the south clockwise): Khao Wong, Kuchinarai, and Huai Phueng of Kalasin Province; Phu Phan and Tao Ngoi of Sakon Nakhon province; and Dong Luang of Mukdahan province.
The minor district (king amphoe) was created on 1 April 1995, when it was split off from Khao Wong district.[1]
On 15 May 2007, all 81 minor districts were upgraded to full districts.[2] With publication in the Royal Gazette on 24 August, the upgrade became official.[3]
The district is divided into five sub-districts (tambons), which are further subdivided into 54 villages (mubans). Na Khu is a township (thesaban tambon) which covers parts of tambon Na Khu. There are a further five tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Na Khu | นาคู | 13 | 9,799 | ||
| 2. | Sai Na Wang | สายนาวัง | 8 | 4,117 | ||
| 3. | Non Na Chan | โนนนาจาน | 9 | 4,747 | ||
| 4. | Bo Kaeo | บ่อแก้ว | 14 | 8,780 | ||
| 5. | Phu Laen Chang | ภูแล่นช้าง | 10 | 4,067 |