| Official Name: | Benchalak |
| Native Name: | เบญจลักษ์ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sisaket |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Siao |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 35807 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 33110 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3319 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 14.795°N 104.67°W |
Benchalak (Thai: เบญจลักษ์, in Thai pronounced as /bēn.t͡ɕā.lák/) is a district (amphoe) of Sisaket province, northeastern Thailand.
The minor district (king amphoe) was created on 31 May 1993, when five tambons were split off from Kantharalak district.[1] It was upgraded to a full district on 5 December 1996.[2]
Neighboring districts are (from the south clockwise): Kantharalak, Si Rattana, Nam Kliang, and Non Khun of Sisaket Province; Det Udom and Thung Si Udom of Ubon Ratchathani province.
The district is divided into five sub-districts (tambons), which are further subdivided into 64 villages (mubans). There are no municipal (thesaban) areas. There are five tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Siao | เสียว | 14 | 7,469 | ||
| 2. | Nong Wa | หนองหว้า | 15 | 7,395 | ||
| 3. | Nong Ngu Lueam | หนองงูเหลือม | 12 | 7,059 | ||
| 4. | Nong Hang | หนองฮาง | 12 | 6,739 | ||
| 5. | Tha Khlo | ท่าคล้อ | 11 | 7,145 |