The University of Toronto Mississauga (UTM or U of T Mississauga) is one of the three campuses of the University of Toronto and its second-largest academic division, located in Mississauga, Ontario, Canada.

It is the second-largest of the University of Toronto's three campuses in terms of both student enrolment and land area. Known for its proximity to nature, the suburban campus is set upon 225 acres of protected forest along the valley of the Credit River in the city of Mississauga. It is located approximately 33 kilometres west of the main St. George campus in downtown Toronto.

Originally established in 1967 as Erindale College, one of the University of Toronto's constituent colleges affiliated with the Faculty of Arts and Science, it became its own academic division of the university in 2003. The campus has since grown to become the university's second-largest division overall and its second-largest campus, the other two of which are St. George and the Scarborough campus.

The University of Toronto hosts degree programs at both the undergraduate and graduate level on its Mississauga campus in 15 academic departments and three institutions, including the Institute of Communication, Culture, Information and Technology (ICCIT). The campus mainly provides undergraduate education, and as part of the university's tri-campus structure, it hosts many of the same programs as the Faculty of Arts and Science on the St. George campus. UTM offers graduate programs notably through the Mississauga Academy of Medicine, one of the four academies in the Temerty Faculty of Medicine's MD program, and the Institute for Management and Innovation (IMI).