Banff is a town in Banff National Park, Alberta, Canada, in Alberta's Rockies along the Trans-Canada Highway, 126 km (78 mi) west of Calgary and 58 km (36 mi) east of Lake Louise, 1,400 to 1,630 m above sea level,

Banff National Park is Canada's oldest national park, established in 1885 as Rocky Mountains Park. Located in Alberta's Rocky Mountains, 110–180 kilometres (68–112 mi) west of Calgary, Banff encompasses 6,641 square kilometres (2,564 sq mi) of mountainous terrain, with many glaciers and ice fields, dense coniferous forest, and alpine landscapes. Provincial forests and Yoho National Park are neighbours to the west, while Kootenay National Park is located to the south and Kananaskis Country to the southeast. The main commercial centre of the park is the town of Banff, in the Bow River valley.