| Nahanni Butte | |
| Native Name: | Tthenáágó |
| Settlement Type: | First Nations/Dene Band - Designated Authority (Nahanni Butte Dene Band) |
| Pushpin Map: | Canada Northwest Territories#Canada |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Territory |
| Subdivision Name1: | Northwest Territories |
| Subdivision Type2: | Region |
| Subdivision Name2: | Dehcho Region |
| Subdivision Type3: | Constituency |
| Subdivision Name3: | Nahendeh |
| Subdivision Type4: | Census division |
| Subdivision Name4: | Region 4 |
| Leader Title: | Chief |
| Leader Name: | Steve Vital |
| Leader Title1: | Band Manager |
| Leader Name1: | Soham Srimani |
| Leader Title2: | MLA |
| Leader Name2: | Shane Thompson |
| Area Land Km2: | 78.99 |
| Elevation M: | 182 |
| Coordinates: | 61.0339°N -123.3806°W |
| Population As Of: | 2016 |
| Population Total: | 87 |
| Population Density Km2: | 1.1 |
| Timezone: | MST |
| Utc Offset: | −07:00 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | −06:00 |
| Postal Code Type: | Canadian Postal code |
| Postal Code: | X0E 0C1 & X0E 2N0 |
| Area Code: | 867 |
| Blank Name: | Telephone exchange |
| Blank Info: | 602 |
| Blank2 Name: | Prices |
| Blank3 Name: | - Living cost |
| Blank3 Info: | 147.5 |
| Blank4 Name: | - Food price index |
| Blank4 Info: | 139.4 |
| Footnotes: | Sources: Department of Municipal and Community Affairs, Prince of Wales Northern Heritage Centre,[1] Canada Flight Supplement 2013 figure based on Edmonton = 100[2] 2015 figure based on Yellowknife = 100 |
Nahanni Butte (; Slavey language: Tthenáágó in Athapascan languages pronounced as /t̪θɛnáːkó/ "strong rock") is a "Designated Authority"[3] in the Dehcho Region of the Northwest Territories, Canada. The community is located at the confluence of the Liard and South Nahanni Rivers in the southwestern part of the NWT.
Although it was not normally accessible by road, a winter road was constructed yearly until an all-season road was completed in October 2010 as far as the Liard River. Access from there is by river taxi in summer and ice road in winter; there are no plans for a vehicle ferry.
In the 2021 Census of Population conducted by Statistics Canada, Nahanni Butte had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 79.42km2, it had a population density of in 2021.[4]
In 2016, there were 80 First Nations people and 40 people speak a Slavey language.
The Dene of the community are represented by the Nahɂą Dehé Dene Band and belong to the Dehcho First Nations.[5]