| 1 Jan, 2023 (Sun) | New Year | Public Holiday |
| 13 Jan, 2023 (Fri) | Constitution Day | Observance |
| 14 Feb, 2023 (Tue) | Valentine's Day | Observance |
| 21 Feb, 2023 (Tue) | Tsagaan Sar | Public Holiday |
| 22 Feb, 2023 (Wed) | Tsagaan Sar Holiday | Public Holiday |
| 23 Feb, 2023 (Thu) | Tsagaan Sar Holiday | Public Holiday |
| 1 Mar, 2023 (Wed) | Patriots' Day | Observance |
| 8 Mar, 2023 (Wed) | International Women's Day | Public Holiday |
| 18 Mar, 2023 (Sat) | Soldiers' Day | Observance |
| 21 Mar, 2023 (Tue) | March Equinox | Season |
| 7 Apr, 2023 (Fri) | Health Day | Observance |
| 26 Apr, 2023 (Wed) | Intellectual Property Day | Observance |
| 15 May, 2023 (Mon) | Family Day | Observance |
| 1 Jun, 2023 (Thu) | Children's Day | Public Holiday |
| 4 Jun, 2023 (Sun) | Great Buddha Day | Public Holiday |
| 22 Jun, 2023 (Thu) | June Solstice | Season |
| 10 Jul, 2023 (Mon) | Political Flag Day | Observance |
| 11 Jul, 2023 (Tue) | Naadam (National Day) | Public Holiday |
| 12 Jul, 2023 (Wed) | Naadam Holiday (National Day Holiday) | Public Holiday |
| 13 Jul, 2023 (Thu) | Naadam Holiday (National Day Holiday) | Public Holiday |
| 14 Jul, 2023 (Fri) | Naadam Holiday (National Day Holiday) | Public Holiday |
| 15 Jul, 2023 (Sat) | Naadam Holiday (National Day Holiday) | Public Holiday |
| 25 Aug, 2023 (Fri) | Youth's Day | Observance |
| 10 Sep, 2023 (Sun) | Repression Victims' Day | Observance |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 1 Oct, 2023 (Sun) | Elders' Day | Observance |
| 29 Oct, 2023 (Sun) | Capital City Day | Observance |
| 14 Nov, 2023 (Tue) | Genghis Khan Day | Public Holiday |
| 26 Nov, 2023 (Sun) | Republic's Day | Public Holiday |
| 10 Dec, 2023 (Sun) | Human Rights Day | Observance |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 29 Dec, 2023 (Fri) | Independence Day | Public Holiday |
