Chulalongkorn University academic calendar for academic year 2019:
| Semester System | Schedule |
| First Semester | |
| First day of classes | Tuesday, 13 August 2019 |
| Midterm examinations (if any) | Monday, 30 September – Friday, 4 October 2019 |
| End of first semester activities | Sunday, 3 November 2019 |
| Last day of classes | Friday, 29 November 2019 |
| Final examinations | Monday, 2 December – Tuesday, 17 December 2019 |
| End of first semester | Wednesday, 18 December 2019 |
| Second Semester | |
| First day of classes | Monday, 6 January 2020 |
| Midterm examinations (if any) | Monday, 2 March – Friday 6 March 2020 |
| End of second semester activities | Sunday, 5 April 2020 |
| Last day of classes | Friday, 1 May 2020 |
| Final examinations | Tuesday, 5 May – Wednesday, 20 May 2020 |
| End of second semester | Thursday, 21 May 2020 |
| Summer Session | |
| First day of classes | Monday, 1 June 2020 |
| Last day of classes and examination | Friday, 17 July 2020 |
| End of summer session | Saturday, 18 July 2020 |
| Last day of academic year | Friday, 7 August 2020 |
| Trimester System | Schedule |
| First Semester | |
| First day of classes | Tuesday, 13 August 2019 |
| Midterm examinations (if any) | Monday, 30 September – Friday, 4 October 2019 |
| Last day of classes | Friday, 22 November 2019 |
| Final examinations | Monday, 25 November – Friday, 29 November 2019 |
| End of first semester | Saturday, 30 November 2019 |
| Second Semester | |
| First day of classes | Monday, 9 December 2019 |
| Midterm examinations (if any) | Monday, 27 January – Friday, 31 January 2020 |
| Last day of classes | Friday, 20 March 2020 |
| Final examinations | Monday, 23 March – Friday, 27 March 2020 |
| End of second semester | Saturday, 28 March 2020 |
| Third Semester | |
| First day of classes | Tuesday, 7 April 2020 |
| Midterm examinations (if any) | Monday, 25 May – Friday, 29 May 2020 |
| Last day of classes | Friday, 17 July 2020 |
| Final examinations | Monday, 20 July – Friday, 24 July 2020 |
| End of third semester | Saturday, 25 July 2020 |
| Last day of academic year | Friday, 7 August 2020 |
