| New Year's Day | National Holiday | |
| 2018 Winter Olympics start | Observance | |
| Valentine's Day | Observance | |
| Seollal Holiday Day 1 | National Holiday | |
| Seollal Holiday Day 2 | National Holiday | |
| Seollal | Public Holiday | |
| Seollal Holiday Day 3 | National Holiday | |
| 2018 Winter Olympics end | Observance | |
| Independence Movement Day | National Holiday | |
|
| 2018 Winter Paralympics start | Observance | |
| 2018 Winter Paralympics end | Observance | |
| March Equinox | Season | |
| March Equinox | Season | |
| Arbor Day | Observance | |
| National Assembly Election Day | National Holiday | |
| Labor Day | Bank Holiday | |
| Children's Day | National Holiday | |
| Children's Day observed | Public Holiday | |
| Parents' Day | Observance | |
| Teachers' Day | Observance | |
| Buddha's Birthday | National Holiday | |
| Memorial Day | National Holiday | |
| Local Election Day | Public Holiday | |
| June Solstice | Season | |
|
| Constitution Day | Observance | |
| Liberation Day | National Holiday | |
| September Equinox | Season | |
| Mid-Autumn Festival Day 1 | National Holiday | |
| Chuseok Holiday | Public Holiday | |
| Mid-Autumn Festival Day 2 | National Holiday | |
| Chuseok | Public Holiday | |
| Mid-Autumn Festival Day 3 | National Holiday | |
| Chuseok Holiday | Public Holiday | |
| Chuseok Holiday | Public Holiday | |
| Armed Forces Day | Observance | |
| National Foundation Day | National Holiday | |
| Hangul Day | National Holiday | |
| Halloween | Observance | |
| Dongzhi Festival | Season | |
| Dongzhi Festival | Season | |
| Christmas Eve | Observance | |
| Christmas Day | National Holiday | |
| New Year's Eve | Observance | |