| May 23 | Victoria Day; University closed |
| July 1 | Canada Day holiday; University closed |
| July TBA | first round of course enrolment begins in WDW and Group B courses (exception: Rotman Commerce Courses) |
| August 1 | Civic Holiday; University closed |
| August 3 | Priority period of enrolment ends |
| August 4 | no course enrolment for St. George campus students |
| August 5 | priorities for P indicator courses removed for St. George degree students |
| August 8 | no course enrolment for St. George campus students |
| August 10 | no course enrolment for St. George campus students |
| August 23 | pay or officially defer at least the first installment of fees by this date; students who have not paid or officially deferred at least the first installment of fees are removed from their courses |
| September 5 | Labour Day; University closed |
| September 9 | no course enrolment for St. George campus students |
| September 12 | classes begin in F and Y section code courses |
| September 18 | waiting lists for F and Y courses turned off |
| September 25 | last day to add or make section changes to F and Y section code courses |
| October 3 | first day to request June 2012 graduation |
| October 10 | Thanksgiving; University closed |
| October 14 | December examination schedule posted |
| November 3 | last day to cancel F section code courses |
| November 7-8 | November break; no classes |
| December 6 | classes end in F and Y section code courses; term work in F section code courses must be submitted unless an earlier date has been stipulated |
| December 7 | Makeup Monday classes |
| December 7 | last day to request June 2012 graduation |
| December 8 | study break |
| December 9-20 | examination period: final examinations in F section code courses; term tests in Y section code courses |
| December 21 - January 1 | winter holidays; University closed December 21 January 1 |
| January 9 | classes begin in S and resume in Y section code courses |
| January 15 | waiting lists for S section code courses turned off |
| January23 | last day to add or make section changes to S section code courses |
| February 17 | April examination timetable posted |
| February 20 | Family Day; University closed |
| February 20 | last day to cancel Y section code courses |
| February 20-24 | Reading Week |
| March 11 | last day to cancel S section code courses |
| April 5 | classes end; term work in S and Y section code courses must be submitted unless an earlier date has been stipulated |
| April 6 | Good Friday; University closed |
| April 9-10 | study period |
| April 11-30 | examination period |
| May 21 | Victoria Day; University closed |