| Dasu | |
| Other Name: | Dassu |
| Settlement Type: | District Headquarter |
| Pushpin Map: | Khyber Pakhtunkhwa#Pakistan |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: |  Pakistan |
| Subdivision Type1: | Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Upper Kohistan |
| Subdivision Type3: | Tehsil |
| Subdivision Name3: | Dassu Tehsil |
| Elevation M: | 841 |
| Timezone1: | PST |
| Utc Offset1: | +5 |
Dasu or Dassu (Abasin Kohistani and Urdu: {{nq|داسو:) is the district headquarters of the Upper Kohistan District of Khyber Pakhtunkhwa, Pakistan. It had fifteen union councils before the Kandia Valley was separated. Since it is being named as tehsil, the Dasu subdivision has eleven union councils. According to the 1998 census, the total population of Dasu was 137,519, in 21,487 households.
With a mild and generally warm and temperate climate, Dasu features a humid subtropical climate (Cfa) under the Köppen climate classification. The average temperature in Dasu is 19.5 °C, while the annual precipitation averages 648 mm. Even in the driest months, there is a lot of precipitation. November is the driest month with 13 mm of precipitation, while July, the wettest month, has an average precipitation of 93 mm.
July is the hottest month of the year with an average temperature of 29.4 °C. The coldest month January has an average temperature of 7.7 °C.