Mount Brett is a 2,984-metre (9,790-foot) summit located in the Massive Range of Alberta, Canada[1][3] It is situated in Banff National Park, 20 km (12 mi) west of Banff townsite, in the Canadian Rockies.

Its nearest higher peak is Mount Ball, 12.52 km (7.78 mi) to the west.

[4] Like other mountains in Banff Park, Mount Brett is composed of sedimentary rock laid down during the Precambrian to Jurassic periods.

[7] Based on the Köppen climate classification, Mount Brett is located in a subarctic climate with cold, snowy winters, and mild summers.

[8] Temperatures can drop below −20 C with wind chill factors below −30 C. Precipitation runoff from Mount Brett drains into tributaries of the Bow River, which is a tributary of the Saskatchewan River.