The University of Toronto (U of T) is a public research university in Toronto, Ontario, Canada, situated north of the city's Financial District on the grounds that surround Queen's Park. It was founded by Royal Charter in 1827 as King's College, the first institution of higher learning in the colony of Upper Canada. Originally controlled by the Church of England, the university assumed the present name in 1850 upon becoming a secular institution. As a collegiate university, it comprises twelve colleges that differ in character and history, each retaining substantial autonomy on financial and institutional affairs.

Academically, the University of Toronto is noted for influential movements and curricula in literary criticism and communication theory, known collectively as the Toronto School. The university was the birthplace of insulin and stem cell research, and was the site of the first practical electron microscope, the development of multi-touch technology and the identification of Cygnus X-1 as a black hole. By a significant margin, it receives the most annual research funding of any Canadian university. The Varsity Blues are the athletic teams that represent the university in intercollegiate league matches, with particularly long and storied ties to gridiron football and ice hockey. The university's Hart House is an early example of the North American student centre, simultaneously serving cultural, intellectual and recreational interests within its large Gothic-revival complex.

The University of Toronto ranked as the nation's top medical-doctoral university in Maclean's magazine for twelve consecutive years between 1994 and 2005, and places 24th in the Academic Ranking of World Universities, 18th in the Newsweek global university ranking, and 29th overall in the Times Higher Education ranking.