University Health Network (UHN) is a group of hospitals in Toronto, Ontario, Canada. It does research and teaches people about health. It is the biggest health research group in Canada. It got the most money for research in Canada. From 2015 to 2022, it was the best research hospital in Canada.
The group has three main hospitals. These are Toronto General Hospital, Toronto Western Hospital, and Princess Margaret Cancer Centre. It also has a place for people to get better after they are sick or hurt, called the Toronto Rehabilitation Institute. And it has a school, called The Michener Institute, where people learn about health sciences and leadership. In the year from 2019 to 2020, over 39,000 people stayed in the hospital. Almost 121,000 people went to the hospital for emergencies.