Calgary ( (listen) KAL-gər-ee; locally: KAL-gree) is the largest city in the western Canadian province of Alberta and the largest metro area within the three Prairie Provinces region. As of 2021, the city proper had a population of 1,306,784 and a metropolitan population of 1,481,806, making it the third-largest city and fifth-largest metropolitan area in Canada.

Calgary is situated at the confluence of the Bow River and the Elbow River in the south of the province, in the transitional area between the Rocky Mountain Foothills and the Canadian Prairies, about 80 km (50 mi) east of the front ranges of the Canadian Rockies, roughly 299 km (186 mi) south of the provincial capital of Edmonton and approximately 240 km (150 mi) north of the Canada–United States border. The city anchors the south end of the Statistics Canada-defined urban area, the Calgary–Edmonton Corridor.

Calgary's economy includes activity in the energy, financial services, film and television, transportation and logistics, technology, manufacturing, aerospace, health and wellness, retail, and tourism sectors. The Calgary Metropolitan Region is home to Canada's second-largest number of corporate head offices among the country's 800 largest corporations. In 2015, Calgary had the largest number of millionaires per capita of any major Canadian city. In 2022, Calgary was ranked alongside Zürich as the third most livable city in the world, ranking first in Canada and in North America. In 1988, it became the first Canadian city to host the Olympic Winter Games.