| Behrain Tehsil | |
| Native Name: | Urdu: {{nq|تحصیل بحرین Pushto; Pashto: {{script/Arabic|بحرين تحصیل |
| Native Name Lang: | ur |
| Settlement Type: | Tehsil |
| Pushpin Map Caption: | Location in Pakistan |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Swat |
| Subdivision Type3: | Capital |
| Subdivision Type4: | Towns |
| Subdivision Type5: | Union councils |
| Population As Of: | 2017 |
| Population Footnotes: | [1] |
| Population Total: | 248,474 |
| Population Rural: | 186,687 |
| Population Urban: | 61,787 |
| Timezone: | PST |
| Utc Offset: | +5 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | +6 |
Behrain is a tehsil located in Swat District, Khyber Pakhtunkhwa, Pakistan. The population is 61,787, according to the 2017 census.