| 1 Jan, 2023 (Sun) | New Year's Day | National holiday |
| 2 Jan, 2023 (Mon) | New Year's Day observed | National holiday |
| 22 Jan, 2023 (Sun) | Lunar New Year's Day | National holiday |
| 23 Jan, 2023 (Mon) | Second Day of Lunar New Year | National holiday |
| 24 Jan, 2023 (Tue) | Day off for Lunar New Year's Day | National holiday |
| 5 Feb, 2023 (Sun) | Thaipusam | Observance |
| 14 Feb, 2023 (Tue) | Valentine's Day | Observance |
| 15 Feb, 2023 (Wed) | Total Defense Day | Observance |
| 8 Mar, 2023 (Wed) | International Women's Day | Observance |
| 21 Mar, 2023 (Tue) | March Equinox | Season |
| 23 Mar, 2023 (Thu) | Ramadan Start | Observance |
| 1 Apr, 2023 (Sat) | April Fool's Day | Observance |
| 7 Apr, 2023 (Fri) | Good Friday | National holiday |
| 8 Apr, 2023 (Sat) | Easter Saturday | Observance |
| 9 Apr, 2023 (Sun) | Easter Sunday | Observance |
| 22 Apr, 2023 (Sat) | Hari Raya Puasa | National holiday |
| 1 May, 2023 (Mon) | Labour Day | National holiday |
| 14 May, 2023 (Sun) | Mother's Day | Observance |
| 18 May, 2023 (Thu) | International Museum Day | Observance |
| 2 Jun, 2023 (Fri) | Vesak Day | National holiday |
| 18 Jun, 2023 (Sun) | Father's Day | Observance |
| 22 Jun, 2023 (Thu) | June Solstice | Season |
| 29 Jun, 2023 (Thu) | Hari Raya Haji | National holiday |
| 1 Jul, 2023 (Sat) | Singapore Armed Forces Day | Observance |
| 21 Jul, 2023 (Fri) | Racial Harmony Day | Observance |
| 9 Aug, 2023 (Wed) | National Day | National holiday |
| 1 Sep, 2023 (Fri) | Election Day | National holiday |
| 11 Sep, 2023 (Mon) | Teachers' Day | Observance |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 6 Oct, 2023 (Fri) | Children's Day | Observance |
| 12 Nov, 2023 (Sun) | Diwali/Deepavali | National holiday |
| 13 Nov, 2023 (Mon) | Day off for Diwali/Deepavali | National holiday |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 24 Dec, 2023 (Sun) | Christmas Eve | Observance |
| 25 Dec, 2023 (Mon) | Christmas Day | National holiday |
| 31 Dec, 2023 (Sun) | New Year's Eve | Observance |
