University Health Network (UHN) is a public research and teaching hospital network in Toronto, Ontario, Canada. It is the largest health research organization in North America and ranks first in Canada for total research funding. It was named Canada's top research hospital by Research Infosource from 2015 to 2017. The network includes three acute care hospitals - Toronto General Hospital, Toronto Western Hospital, Princess Margaret Cancer Centre - the Toronto Rehabilitation Institute, and The Michener Institute, a post-secondary institution granting diplomas and certificates in health sciences and leadership. In the 2019-2020 fiscal year, there were over 39,000 acute inpatient stays and close to 121,000 emergency department visits across the three acute care hospitals.