University College, popularly referred to as UC, is a constituent college of the University of Toronto, created in 1853 specifically as an institution of higher learning free of religious affiliation. It was the founding member of the university's modern collegiate system, and its non-denominationalism contrasted with contemporary colleges at the time, such as Trinity College and St. Michael's College, both of which later became part of the University of Toronto.

A collegiate university is a university in which functions are divided between a central administration and a number of constituent colleges. Historically, the first collegiate university was the University of Paris and its first college was the Collège des Dix-Huit. The two principal forms are residential college universities, where the central university is responsible for teaching and colleges may deliver some teaching but are primarily residential communities, and federal universities where the central university has an administrative role and the colleges may be residential but are primarily teaching institutions. The larger colleges or campuses of federal universities, such as University College London and University of California, Berkeley, may be effectively universities in their own right and often have their own student unions.