Institut universitaire en santé mentale de Montréal[1] is a psychiatric hospital in Montreal, Quebec, Canada.

It was established in 1873 and is affiliated with the Université de Montréal Faculty of Medicine.

The facility receives people with severe mental health problems.

[2] On October 14, 2011, Hôpital Louis-H. Lafontaine is designated a mental health university institute.

[3] On March 5, 2013, the Hôpital Louis-H. Lafontaine renamed to become the Institut universitaire en santé mentale de Montréal.