William Osler Health System, formerly William Osler Health Centre, is a hospital network in Ontario, Canada that serves the city of Brampton and the northern portion of the western Toronto district of Etobicoke.

The network is named for Canadian physician William Osler, one of the four founding professors of Johns Hopkins Hospital and developer of the concept of medical residency.

[citation needed] The network consists of two hospitals and one ambulatory care centre: Georgetown Hospital was previously part of the William Osler Health Centre, but in 2005 it was transferred to Halton Healthcare.

Ken White, former Trillium CEO, was appointed "Supervisor", which encompasses the role of both president and CEO as well as chairman of the board, by the Ministry of Health and Long-Term Care in 2007 "…to restore public confidence in the health centre".

[2][3] In April 2022, the foundation received a $128,000 donation from Amazon to assist with recovery from the COVID-19 pandemic.