| Official Name: | Nakhon Thai |
| Native Name: | นครไทย |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Phitsanulok |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Tambon |
| Subdivision Name3: | 11 |
| Subdivision Type4: | Muban |
| Subdivision Name4: | 145 |
| Established Title: | District established |
| Area Total Km2: | 2,220.374 |
| Population As Of: | 2019 |
| Population Footnotes: | [1] |
| Population Total: | 87,772 |
| Population Density Km2: | 40 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 65120 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 6502 |
| Timezone: | ICT |
| Utc Offset: | +7 |
Nakhon Thai (Thai: นครไทย, in Thai pronounced as /ná(ʔ).kʰɔ̄ːn tʰāj/) is a district (amphoe) in the eastern part of Phitsanulok province, central Thailand.
Neighboring districts are (from the southwest clockwise), Wang Thong and Chat Trakan of Phitsanulok Province; Na Haeo and Dan Sai of Loei province; and Khao Kho of Phetchabun province.
Phu Hin Rong Kla National Park is in Nakhon Thai District.[2]
Nakhon Thai lies within the Nan Basin, which is part of the Chao Phraya Watershed. The Khwae Noi River flows through the district, as well as the lesser Fia (Thai: ลำน้ำเฟี้ย) and Kaem (Thai: ลำน้ำแขม) Rivers.
Nakhon Thai is divided into 11 sub-districts (tambons), which are further subdivided into 145 administrative villages (mubans).
| No. | Name | Thai | Villages | Pop. | Households | |
|---|---|---|---|---|---|---|
| 1. | Nong Kathao | Thai: หนองกะท้าว | 27 | 16,384 | 6,058 | |
| 2. | Noen Phoem | Thai: เนินเพิ่ม | 19 | 13,467 | 4,612 | |
| 3. | Ban Yaeng | Thai: บ้านแยง | 13 | 10,235 | 4,763 | |
| 4. | Nakhon Thai | Thai: นครไทย | 13 | 9,278 | 4,155 | |
| 5. | Na Bua | Thai: นาบัว | 15 | 7,828 | 2,538 | |
| 6. | Bo Pho | Thai: บ่อโพธิ์ | 13 | 6,976 | 2,301 | |
| 7. | Huai Hia | Thai: ห้วยเฮี้ย | 10 | 6,855 | 2,453 | |
| 8. | Ban Phrao | Thai: บ้านพร้าว | 10 | 6,251 | 2,187 | |
| 9. | Yang Klon | Thai: ยางโกลน | 10 | 4,979 | 1,389 | |
| 10. | Nakhon Chum | Thai: นครชุม | 8 | 3,072 | 1,002 | |
| 11. | Nam Kum | Thai: น้ำกุ่ม | 7 | 2,447 | 765 |
There are two sub-district municipalities (thesaban tambons) in the district:
There are nine sub-district administrative organizations (SAO) in the district:
There are 23 Buddhist temples in Nakhon Thai.
Nakhon Thai is a district on the outskirts of Phitsanulok province, more than 80% of which is reserved forest area.
Therefore, Nakhon Thai and two neighboring districts, Chat Trakan and Wat Bot, have the lowest prosperity index in Phitsanulok, lowest household income and highest household debt.[3]