| Na Khun Yai | |
| Native Name: | นาคูณใหญ่ |
| Type: | Subdistrict |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Nakhon Phanom |
| Subdivision Type2: | District |
| Subdivision Name2: | Na Wa |
| Unit Pref: | Metric |
| Area Total Km2: | 17.734 |
| Population Total: | 4565 |
| Population As Of: | 2005 |
| Population Density Km2: | auto |
| Postal Code Type: | Postal Code |
| Geocode: | 480904 |
| Postal Code: | 48180 |
Na Khun Yai (th|นาคูณใหญ่, pronounced as /th/) is a subdistrict (tambon) in Nakhon Phanom Province, administered by Na Wa District in northeastern Thailand (Isan).
The village is about 900 km north of Bangkok. Na Khun Yai is underdeveloped, with agriculture as the main economic activity.
Neighboring subdistricts are Phon Suang (Si Songkhram District) to the north and east and Na Wa to the south and west.
The subdistrict was created on 1 May 1978, when five villages were split off from Na Wa.[1]
The tambon is administered by a tambon administrative organization (TAO), which was created on 13 February 1997.[2] It is subdivided into seven villages (mubans).
| 1. | Ban Muang | บ้านม่วง | ||
| 2. | Ban Na Khun Yai | บ้านนาคูณใหญ่ | ||
| 3. | Ban Na Khun Yai | บ้านนาคูณใหญ่ | ||
| 4. | Ban Na Khun Noi | บ้านนาคูณน้อย | ||
| 5. | Ban Hua Ngua | บ้านหัวงัว | ||
| 6. | Ban Na Khun Noi | บ้านนาคูณน้อย | ||
| 7. | Ban Muang | บ้านม่วง |