| Official Name: | Kui Buri |
| Native Name: | กุยบุรี |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Prachuap Khiri Khan |
| Subdivision Type2: | Seat |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 41246 |
| Population As Of: | 2000 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 77150 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 7702 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 12.0828°N 99.8542°W |
Kui Buri (in Thai pronounced as /kūj būrīː/) is a district (amphoe) in the northern part of Prachuap Khiri Khan province, central Thailand.
Mueang Kui was an ancient city of the Ayutthaya Kingdom. In the reign of King Boromakot, Kui was fourth-class city. In the Rattanakosin era, King Rama II established a Mueang Bang Nang Rom, which had its city hall in Kui Buri. King Mongkut (Rama IV) renamed Mueang Bang Nang Rom "Prachuap Khiri Khan", with the same city hall. When King Chulalongkorn created Monthon Phetchaburi, Kui Buri was included. In 1898 the city hall was moved to Ko Lak bay and Kui Buri was downgraded to a subdistrict of Mueang Prachuap Khiri Khan District. The minor district (king amphoe) of Kui Buri was re-established on 19 July 1960 and officially upgraded to a full district on 16 July 1963.
The British diplomat John Crawfurd visited the area in 1822 during the mission described in his book Journal of an embassy from the Governor-General of India to the courts of Siam and Cochin-China: exhibiting a view of the actual state of those kingdoms. He reported the name of the town as "Kwi".[1]
Its name Kui derived from the Khmer (Central Khmer: គុយ), meaning "rhino horn", and buri derived from the Sanskrit purī (पुरी); meaning "town" or "city"; hence "rhino horn city". Rhino horn has been an important export product since the Ayutthaya period.[2]
Neighbouring districts are Sam Roi Yot to the north and Mueang Prachuap Khiri Khan to the south. To the west is the Tanintharyi Division of Myanmar, to the east the Gulf of Thailand.
The main river of the district is the Khlong Kui.
The district is divided into six sub-districts (tambons), which are further subdivided into 47 villages (mubans). There are two townships (thesaban tambons) in the district. Kui Buri covers parts of tambons Kui Buri and Kui Nuea, and Rai Mai covers parts of tambon Sam Krathai.
| No. | Name | Thai name | Villages | ||
|---|---|---|---|---|---|
| 1. | Kui Buri | กุยบุรี | 8 | ||
| 2. | Kui Nuea | กุยเหนือ | 11 | ||
| 3. | Khao Daeng | เขาแดง | 3 | ||
| 4. | Don Yai Nu | ดอนยายหนู | 4 | ||
| 6. | Sam Krathai | สามกระทาย | 10 | ||
| 7. | Hat Kham | หาดขาม | 11 |