| January | New Year | 2023-01-01 Sunday | Public holidays |
| Constitution Day | 2023-01-13 Sunday | Holidays or anniversaries | |
| Lunar New Year’s Day | 2023-01-22 Sunday | Public holidays | |
| Second Day of the Lunar New Year | 2023-01-23 Monday | Public holidays | |
| Third Day of the Lunar New Year | 2023-01-24 Tuesday | Public holidays | |
| February | Valentine’s Day | 2023-02-14 Tuesday | Holidays or anniversaries |
| March | Patriot’s Day | 2023-03-01 Wednesday | Holidays or anniversaries |
| International Women’s Day | 2023-03-08 Wednesday | Public holidays | |
| Soldiers’ Day | 2023-03-18 Saturday | Holidays or anniversaries | |
| April | Health Day | 2023-04-07 Friday | Holidays or anniversaries |
| Intellectual Property Day | 2023-04-26 Wednesday | Holidays or anniversaries | |
| May | Family Day | 2023-05-15 Monday | Holidays or anniversaries |
| June | Children’s Day | 2023-06-01 Thursday | Public holidays |
| July | Political Flag Day | 2023-07-10 Monday | Holidays or anniversaries |
| Naadam Holiday (National Day) | 2023-07-11 Tuesday | Public holidays | |
| Naadam Holiday (National Day) | 2023-07-12 Wednesday | Public holidays | |
| Naadam Holiday (National Day) | 2023-07-13 Thursday | Public holidays | |
| Naadam Holiday (National Day) | 2023-07-14 Friday | Public holidays | |
| Naadam Holiday (National Day) | 2023-07-15 Saturday | Public holidays | |
| August | Youth’s Day | 2023-08-25 Friday | Holidays or anniversaries |
| September | Repression Victims’ Day | 2023-09-10 Sunday | Holidays or anniversaries |
| October | Elders’ Day | 2023-10-01 Sunday | Holidays or anniversaries |
| Capital City Day | 2023-10-29 Sunday | Holidays or anniversaries | |
| November | Republic’s Day | 2023-11-26 Sunday | Public holidays |
| December | Human Rights Day | 2023-12-10 Sunday | Holidays or anniversaries |
| Independence Day | 2023-12-29 Friday | Public holidays |
