Hôpital Maisonneuve-Rosemont was founded in 1971 as a result of a merger of two previous hospitals: Hôpital Maisonneuve and Hôpital Saint-Joseph de Rosemont.

Hôpital Maisonneuve was founded by the Grey Nuns in 1954 and housed a nursing school and the Montreal Heart Institute.
Hôpital Saint-Joseph de Rosemont was founded in 1950 by the Misericordia Sisters.
It specialized in treating tuberculosis.
Hôpital Maisonneuve-Rosemont was founded in 1971 as a result of a merger of two previous hospitals: Hôpital Maisonneuve and Hôpital Saint-Joseph de Rosemont.
Hôpital Maisonneuve was founded by the Grey Nuns in 1954 and housed a nursing school and the Montreal Heart Institute. Hôpital Saint-Joseph de Rosemont was founded in 1950 by the Misericordia Sisters. It specialized in treating tuberculosis.
Hôpital Maisonneuve-Rosemont