Official holidays |
| 1 January 2023 | New Year |
| 9 April 2023 | Easter |
| 10 April 2023 | Easter Monday |
| 1 May 2023 | International Workers' Day |
| 18 May 2023 | Ascension Day |
| 28 May 2023 | Pentecost |
| 29 May 2023 | Whit Monday |
| 21 July 2023 | National Day |
| 15 August 2023 | Assumption Day |
| 1 November 2023 | All Saints' Day |
| 11 November 2023 | Armistice Day |
| 25 December 2023 | Christmas |
Holidays for the federal administration |
| 2 November 2023 | All Souls' Day |
| 15 November 2023 | Royal Day |
| 26 December 2023 | Boxing Day |
Regional holidays |
| 8 May 2023 | Day of the Brussels-Capital Region |
| 11 July 2023 | Day of the Flemish Community |
| 17 September 2023 | Day of the Walloon Region |
| 27 September 2023 | Day of the French-speaking Community |
| 15 November 2023 | Day of the German-speaking Community |
