| Official Name: | Khai Si |
| Native Name: | ไคสี |
| Settlement Type: | Subdistrict |
| Pushpin Map: | Thailand |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type2: | Province |
| Subdivision Name2: | Bueng Kan |
| Subdivision Type3: | District |
| Subdivision Name3: | Mueang Bueng Kan |
| Government Type: | Subdistrict municipality |
| Area Total Km2: | 59.04 |
| Population As Of: | 2022 |
| Population Total: | 5,466 |
| Population Density Km2: | 93 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 18.4115°N 103.5187°W |
| Postal Code Type: | Postal code |
| Postal Code: | 38000 |
| Area Code Type: | Calling code |
| Area Code: | 042 |
| Blank Name Sec1: | Geocode |
| Blank Info Sec1: | 38010800 |
Khai Si (Thai: ไคสี) is a subdistrict (tambon) in Mueang Bueng Kan district, in Bueng Kan province, Isan (northeastern Thailand). As of 2022, it had a population of 5,466 people and has jurisdiction over ten villages. It lies on Highway 212 and the Mekong River and border with Laos, west of Bueng Kan and east of Ho Kham.[1]
The subdistrict was created in 1979, when nine administrative villages were split from Non Sawang subdistrict (then still named Nong Kheng) to form the new sub-district.[2]
The administration of Khai Si subdistrict (tambon) is responsible for an area that covers 36,905 rai ~ and consists of ten administrative villages (muban).[3]
As of 2022: 5,466 people.[4]
| Village | English | Thai | People | |
|---|---|---|---|---|
| Moo1 | Ban Tha Sa-ad | บ้านท่าสะอาด | 615 | |
| Moo2 | Ban Don Yom | บ้านดอนยม | 626 | |
| Moo3 | Ban A-hong | บ้านอาฮง | 583 | |
| Moo4 | Ban Non Sila | บ้านโนนศิลา | 568 | |
| Moo5 | Ban Khai Si | บ้านไคสี | 349 | |
| Moo6 | Ban Siriphon | บ้านศิริพร | 628 | |
| Moo7 | Ban Kham Muen | บ้านคำหมื่น | 616 | |
| Moo8 | Ban Huai Seum Nuea | บ้านห้วยเซือมเหนือ | 472 | |
| Moo9 | Ban Non Phaeng | บ้านโนนแพง | 406 | |
| Moo10 | Ban Kham Saen | บ้านคำแสน | 603 |
Khai Si subdistrict municipality (Thai: เทศบาลตำบลไคสี|translit=thetsaban tambon Khai Si) covers the whole Khai Si subdistrict.
Khai Si subdistrict is home to the following active temples, where Theravada Buddhism is practised by local residents:[5]
| Temple name | Thai | Location | |
|---|---|---|---|
| Wat Yod Kaew Thammakhun | วัดยอดแก้วธรรมคุณ | Moo1 | |
| Wat Phonchai Thammakhun | วัดพรชัยธรรมคุณ | Moo2 | |
| Wat A-hong Silawat | วัดอาฮงศิลาวาส | Moo3 | |
| Wat Sawang Kongkaram | วัดสว่างคงคาราม | Moo4 | |
| Wat Sumontharam | วัดสุมณฑาราม | Moo5 | |
| Wat Si Somboon | วัดศรีสมบูรณ์ | Moo6 | |
| Wat Thepmanee Si Amphon | วัดเทพมณีศรีอัมพร | Moo7 | |
| Wat Si Chom Chuen | วัดศรีชมชี่น | Moo8 | |
| Wat Ban Non Phaeng | วัดบ้านโนนแพง | Moo9 | |
| Wat Samakkheetham | วัดสามัคคีธรรม | Moo10 |