University Health Network (UHN) is made up of Toronto General Hospital, Toronto Western Hospital and Princess Margaret Hospital. Each hospital retains its identity and name within the Network.

A voluntary board of 20 elected members govern UHN, of which two members are appointed by the University of Toronto.

Primary funding for University Health Network comes from the Ontario Ministry of Health. Other funding sources include patient services, grants and donations from individuals and corporations. With an operating budget of more than $850 million, the University Health Network is one of Canada's largest teaching hospitals.