| Official Name: | Khong Chiam |
| Native Name: | โขงเจียม |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ubon Ratchathani |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Khong Chiam |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 32693 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 34220 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3403 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.3189°N 105.4956°W |
Khong Chiam (Thai: โขงเจียม, in Thai pronounced as /kʰǒːŋ tɕīam/) is the easternmost district (amphoe) of Ubon Ratchathani province of Thailand.
The area of the district was the central district khwaeng of Mueang Khong Chiam, which is now Si Mueang Mai district. On 1 January 1957 the three tambons Khong Chiam, Huai Yang, and Pho Klang were split off from Khong Chiam to form the Ban Dan minor district (king amphoe).[1] On 11 December 1959 it was elevated to a full district.[2]
On 14 September 1971 the district was renamed "Khong Chiam", while the former district Khong Chiam was renamed "Si Mueang Mai", as the historical center of Mueang Khong Chiam was in this district.[3]
It is thought that the name Khong Chiam comes from the word khong (โขง) meaning 'chief of elephants' or 'herd of elephants' (khlong; โขลง in Thai) and chiam (เจียม) from the word chiang (เจียง), which means 'tribute'. Overall, it can be meaning 'city with elephants live together in large herds'.[4]
Neighboring districts are (from the south clockwise) Sirindhorn, Phibun Mangsahan, and Si Mueang Mai. To the east across the Mekong River are the Laotian provinces of Salavan and Champasak.
Khong Chiam is the easternmost point of Thailand.
The Pak Mun Dam stops the Mun River before it empties into the Mekong River in this district.
The Kaeng Tana and Pha Taem national parks are in Khong Chiam District.
The district is divided into five sub-districts (tambons), which are further subdivided into 50 villages (mubans). The township (thesaban tambon) Ban Dan covers parts of tambon Khong Chiam. There are a further five tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Khong Chiam | โขงเจียม | 14 | 8,039 | ||
| 2. | Huai Yang | ห้วยยาง | 9 | 7,457 | ||
| 3. | Na Pho Klang | นาโพธิ์กลาง | 9 | 6,895 | ||
| 4. | Nong Saeng Yai | หนองแสงใหญ่ | 9 | 5,104 | ||
| 5. | Huai Phai | ห้วยไผ่ | 9 | 5,198 |