Toronto is the most populous city in Canada and serves as the capital of the province of Ontario. Situated on a harbour at the northwestern shore of Lake Ontario, it anchors the Golden Horseshoe region. The city covers an area of 631 square kilometres, stretching along the lake's shores. It functions as a major administrative and cultural hub for the country.

Indigenous peoples inhabited the area for over 10,000 years before the British established the town of York in 1793. After the War of 1812, during which American troops occupied the town, it was renamed and incorporated as the City of Toronto in 1834. It became the provincial capital in 1867 during Canadian Confederation, expanding through annexation and amalgamation to its current limits.

The city is laid out on a grid pattern interspersed with ravines and urban forests. It is divided into districts including Central Toronto, older suburbs, and outer areas. Notable features include the Toronto Stock Exchange, numerous museums, galleries, and historic sites. The diverse population reflects its role as a primary destination for immigrants, with over 200 ethnic origins represented.

Toronto is an international centre for business, finance, arts, sports, and culture, recognized as one of the most multicultural cities globally. It attracts over 26 million visitors annually to its festivals, entertainment districts, and sports activities. The city is a prominent centre for music, theatre, film production, and digital media, hosting major national broadcast networks and cultural institutions.

The census population was 2,794,356 as of 2021. As Canada's largest financial centre, it hosts the headquarters of five major banks and many multinational corporations. The economy is diversified across technology, design, life sciences, and tourism. Public transit connects the sprawling urban area, though many residents rely on private cars due to the city's extensive geography.