| 1 Jan, 2023 (Sun) | New Year's Day | Public Holiday |
| 2 Jan, 2023 (Mon) | New Year's Day observed | Public Holiday |
| 14 Feb, 2023 (Tue) | Valentine's Day | Observance |
| 20 Feb, 2023 (Mon) | Winter Midterm Bank Holiday | Public Holiday |
| 19 Mar, 2023 (Sun) | Mothers' Day | Observance |
| 21 Mar, 2023 (Tue) | March Equinox | Season |
| 26 Mar, 2023 (Sun) | Daylight Saving Time starts | Clock change/Daylight Saving Time |
| 7 Apr, 2023 (Fri) | Good Friday | Public Holiday |
| 9 Apr, 2023 (Sun) | Easter Sunday | Major Observance |
| 10 Apr, 2023 (Mon) | Easter Monday | Public Holiday |
| 28 Apr, 2023 (Fri) | Workers' Memorial Day | Public Holiday |
| 1 May, 2023 (Mon) | May Day | Public Holiday |
| 8 May, 2023 (Mon) | Special King's Coronation Bank Holiday | Public Holiday |
| 29 May, 2023 (Mon) | Spring Bank Holiday | Public Holiday |
| 18 Jun, 2023 (Sun) | Father's Day | Observance |
| 19 Jun, 2023 (Mon) | King's Birthday Holiday | Public Holiday |
| 21 Jun, 2023 (Wed) | June Solstice | Season |
| 28 Aug, 2023 (Mon) | Late Summer Bank Holiday | Public Holiday |
| 10 Sep, 2023 (Sun) | Gibraltar Day | Public Holiday |
| 11 Sep, 2023 (Mon) | Gibraltar Day observed | Public Holiday |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 29 Oct, 2023 (Sun) | Daylight Saving Time ends | Clock change/Daylight Saving Time |
| 31 Oct, 2023 (Tue) | Halloween | Observance |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 24 Dec, 2023 (Sun) | Christmas Eve | Major Observance |
| 25 Dec, 2023 (Mon) | Christmas Day | Public Holiday |
| 26 Dec, 2023 (Tue) | Boxing Day | Public Holiday |
| 31 Dec, 2023 (Sun) | New Year's Eve | Major Observance |
