Mount Turner, also known as Boundary Peak 162, is an 8,661+ foot (2,640+ meter) glaciated mountain summit located in the Fairweather Range of the Saint Elias Mountains, on the Canada–United States border between southeast Alaska and British Columbia.

The peak is situated on the shared boundary of Glacier Bay National Park with Tatshenshini-Alsek Provincial Park, 8 mi (13 km) west of Tarr Inlet, and 4.4 mi (7 km) southwest of Mount Forde, which is the nearest peak.

[3] The mountain was named for George Turner (1850–1932), one of the US members of the 1903 Alaska Boundary Tribunal.

[5] Weather systems coming off the Gulf of Alaska are forced upwards by the mountains (orographic lift), causing heavy precipitation in the form of rainfall and snowfall.

Winter temperatures can drop below −20 °C with wind chill factors below −30 °C.