The following is a list of territorial highways in the Northwest Territories of Canada. They are divided amongst Arterial Class Highways, of which there are six; Collector Class Highways, of which there are 23; and closed highways, of which there are two. Only some places in the Northwest Territories can be reached by means of highways.
| Highway | Name | Length (km)[1] | From | To[2] | Notes |
|---|---|---|---|---|---|
 | Mackenzie Highway | 690.0 km (428.7 mi) |  Hwy 35 at Alberta border north of Indian Cabins | Wrigley | Construction began 1938, paused during Second World War, resumed and completed to Hay River in 1949; extended to Highway 3 junction in 1960 and to Fort Simpson in 1971; latest extension to Wrigley completed 1994; Longest highway in the territory |
 | Hay River Highway | 48.6 km (30.2 mi) |  Highway 1 in Enterprise | Northwest corner of Vale Island in Hay River | Also connects with Highway 5; Shortest highway in the territory |
 | Yellowknife Highway | 338.8 km (210.5 mi) | Highway 1 near Fort Providence |  Highway 4 in Yellowknife | Also known as the Great Slave Highway, completed in 1960 |
 | Fort Smith Highway | 267.0 km (165.9 mi) |  Highway 2 near Hay River |  Hwy 48 at Alberta border in Fort Smith | Completed in 1966, passes through Wood Buffalo National Park |
 | Liard Highway | 254.1 km (157.9 mi) |  Hwy 77 at British Columbia border south of Fort Liard | Highway 1 near Fort Simpson | Packed dirt and gravel road |
 | Dempster Highway | 272.5 km (169.3 mi) |  Hwy 5 at Yukon border |  Highway 10 in Inuvik | Canada's only all-weather road to cross the Arctic Circle, completed as a through road from the Yukon in 1979; studies are being done to include a possible link to the Mackenzie Highway |
| Highway | Name | Length (km)[3] | From[4] | To | Notes |
|---|---|---|---|---|---|
| Aklavik Ice Road | 116 km (72 mi) |  Highway 8 in Inuvik | Aklavik | Seasonal. | |
| Colville Lake Winter Road | 165 km (103 mi) | Wrigley-Fort Good Hope Winter Road | Colville Lake | Seasonal. | |
| Délîne Winter Road | 105.3 km (65.4 mi) | Wrigley-Fort Good Hope Winter Road | Délîne | Seasonal. | |
| Dettah Ice Road | 6.3 km (3.9 mi) | School Draw Avenue in Yellowknife | Dettah | Seasonal. | |
| Dettah Road | 11.3 km (7.0 mi) | Highway 4 | Dettah | ||
| Fort Liard Access Road | 5.3 km (3.3 mi) |  Highway 7 | Fort Liard | ||
| Fort McPherson Access Road | 1.1 km (0.68 mi) | Highway 8 | Fort McPherson | ||
| Fort Providence Access Road | 5.4 km (3.4 mi) |  Highway 3 | Fort Providence | ||
 | Fort Resolution Highway | 90.0 km (55.9 mi) |  Highway 5 near Hay River | Fort Resolution | Also provides access to the former community of Pine Point. |
| Fort Simpson Access Road | 3.4 km (2.1 mi) | Highway 1 | Fort Simpson | ||
| Gamètì Winter Road | 128.0 km (79.5 mi) | Whatì Winter Road | Gamètì | Seasonal. | |
 | Ingraham Trail | 69.2 km (43.0 mi) | Highway 3 in Yellowknife | Tibbitt Lake | Provides access to Dettah (27 km (17 mi)) when the ice road (6.5 km (4.0 mi)) is closed. |
| Inuvik Access Road | 0.6 km (0.37 mi) | Highway 8 | Inuvik | ||
 | Inuvik-Tuktoyaktuk Highway | 138 km (86 mi) | Highway 8 near Inuvik | Tuktoyaktuk | Replaced the Tuktoyaktuk Winter Road; construction began 2013, completed 2017 and opened in November. Designated as Highway 10. |
| Nahanni Butte Winter Road | 22.3 km (13.9 mi) | Highway 7 | Nahanni Butte | Seasonal. | |
| Sambaa K’e Winter Road | 126.0 km (78.3 mi) | Highway 1 | Sambaa K’e | Seasonal. | |
| Tibbitt to Contwoyto Winter Road | 568 km (353 mi) | Tibbitt Lake | Contwoyto Lake, Nunavut | Private road first built in 1982 to service mines and exploration activities | |
 | Tłı̨chǫ Highway | 97 km (60 mi) | Highway 3 near Behchokǫ̀ | Whatì Winter Road | Opened in November 2021. |
| Rae Access Road | 10.5 km (6.5 mi) | Highway 3 | Rae borough of Behchokö | ||
| Wekweètì Winter Road | 235.0 km (146.0 mi) | Whatì Winter Road | Wekweètì | Seasonal. | |
| Whatì Winter Road | 100 km (62 mi) | Highway 3 | Whatì | Seasonal. | |
| Wrigley-Fort Good Hope Winter Road | 486.4 km (302.2 mi) | Highway 1 | Fort Good Hope | Connects to Tulita (formerly Fort Norman), Norman Wells, Fort Good Hope, with 106 km branch route to Deline and 165 km branch route to Colville Lake. 34 permanent bridges completed along route which can be used as part of an all-weather route. | |
| Yellowknife Access Road | 3.6 km (2.2 mi) | 49th Avenue, Yellowknife | Giant Mine Boat Launch Access Road | Turns into 48th Street at 49th Avenue. |
| Highway | Name | Length (km)[5] | From[6] | To | Notes |
|---|---|---|---|---|---|
| Tuktoyaktuk Winter Road (closed) | 187 km (116 mi) | Inuvik | Tuktoyaktuk | Former ice road; closed permanently in April 2017 with the completion of the Inuvik-Tuktoyaktuk Highway | |
| Canol Road (closed) | 357 km (222 mi) | Norman Wells | Macmillan Pass, Yukon/Northwest Territories border | Second World War road completed early 1943, abandoned mid-1945, now the Canol Heritage Trail, connecting to the active Yukon Highway 6, the Canol Road |
The communities reached by the all-weather highway network are:
Communities that can only be reached by ice-road are:
Communities with no access by surface vehicle:
