The 2019-20 Calendar was first published on April 22, 2019. Any updates or corrections following the initial publication are noted below.
| Actuarial Science | ||
| April 25, 2019 | ACT240H1 | Prerequisites updated |
| ACT245H1 | Prerequisites updated | |
| ACT247H1 | Prerequisites updated | |
| ACT475H1 | Prerequisites updated | |
| Economics | ||
| April 25, 2019 | ECO372H1 | Title modified |
| Ethics (Centre for) | ||
| May 8, 2019 | ETH350H1 | Course description updated |
| History | ||
| May 23, 2019 | HIS436H1 | Prerequisites updated |
| Indigenous Studies | ||
| May 15, 2019 | INS492H1 | New course added |
| Near and Middle Eastern Civilizations | ||
| May 13, 2019 | Faculty list and section text updated (re: department's email address) | |
| Physics | ||
| April 25, 2019 | PHY196H1 | New course added |
| PHY199H1 | Course re-weighted from Y to H | |
| Statistical Sciences | ||
| May 15, 2019 | ASSPE2270, ASSPE2290 | Completion requirements corrected |
| Trinity College | ||
| April 29, 2019 | Section text updated (re: International Relations) | |
| Victoria College | ||
| April 25, 2019 | VIC170Y1 | Title modified |