St. Michael's Hospital is a teaching hospital and medical centre in Toronto, Ontario, Canada. It was established by the Sisters of St. Joseph in 1892 with the founding goal of taking care of the sick and the poor of Toronto's inner city. The hospital provides tertiary and quaternary services in cardiovascular surgery, neurosurgery, inner city health, and therapeutic endoscopy. It is one of two Level 1 adult trauma centres in Greater Toronto, along with the larger Sunnybrook Health Sciences Centre. As trauma centres, both St. Michael's and Sunnybrook are equipped with helipads. It is one of several teaching hospitals of the University of Toronto Faculty of Medicine and is part of the Unity Health Toronto hospital network.

The Sisters of St. Joseph, also known as the Congregation of the Sisters of St. Joseph, abbreviated CSJ or SSJ, is a Catholic religious congregation of women founded in Le Puy-en-Velay, France, in 1650. This congregation, named for Saint Joseph, has approximately 14,000 members worldwide: about 7,000 in the United States; 2,000 in France; and are active in 50 other countries.