| 1 Jan, 2023 (Sun) | New Year's Day | State Holiday |
| 2 Jan, 2023 (Mon) | New Year's Day observed | State Holiday |
| 14 Jan, 2023 (Sat) | Birthday of Yang di-Pertuan Besar | State Holiday |
| 22 Jan, 2023 (Sun) | Lunar New Year's Day | Federal Public Holiday |
| 23 Jan, 2023 (Mon) | Second Day of Lunar New Year | Federal Public Holiday |
| 23 Jan, 2023 (Mon) | Lunar New Year Holiday | State Holiday |
| 1 Feb, 2023 (Wed) | Federal Territory Day | Federal Territory Holiday |
| 5 Feb, 2023 (Sun) | Thaipusam | State Holiday |
| 14 Feb, 2023 (Tue) | Valentine's Day | Observance |
| 18 Feb, 2023 (Sat) | Isra and Mi'raj | State Holiday |
| 4 Mar, 2023 (Sat) | Anniversary of the Coronation of the Sultan of Terengganu | State Holiday |
| 21 Mar, 2023 (Tue) | March Equinox | Season |
| 23 Mar, 2023 (Thu) | First Day of Ramadan | State Holiday |
| 23 Mar, 2023 (Thu) | Birthday of the Sultan of Johor | State Holiday |
| 7 Apr, 2023 (Fri) | Good Friday | State Holiday |
| 8 Apr, 2023 (Sat) | Nuzul Al-Quran | State Holiday |
| 9 Apr, 2023 (Sun) | Easter Sunday | Observance |
| 15 Apr, 2023 (Sat) | Declaration of Malacca as Historical City | State Holiday |
| 21 Apr, 2023 (Fri) | Hari Raya Puasa Holiday | Federal Public Holiday |
| 22 Apr, 2023 (Sat) | Hari Raya Puasa | Federal Public Holiday |
| 23 Apr, 2023 (Sun) | Hari Raya Puasa Day 2 | Federal Public Holiday |
| 26 Apr, 2023 (Wed) | Birthday of the Sultan of Terengganu | State Holiday |
| 1 May, 2023 (Mon) | Labour Day | Federal Public Holiday |
| 4 May, 2023 (Thu) | Wesak Day | Federal Public Holiday |
| 22 May, 2023 (Mon) | Pahang State Holiday | State Holiday |
| 30 May, 2023 (Tue) | Harvest Festival | State Holiday |
| 31 May, 2023 (Wed) | Second Day of Harvest Festival | State Holiday |
| 1 Jun, 2023 (Thu) | Gawai Dayak | State Holiday |
| 2 Jun, 2023 (Fri) | Gawai Dayak Holiday | State Holiday |
| 5 Jun, 2023 (Mon) | The Yang di-Pertuan Agong's Birthday | Federal Public Holiday |
| 18 Jun, 2023 (Sun) | Sultan of Kedah's Birthday | State Holiday |
| 22 Jun, 2023 (Thu) | June Solstice | Season |
| 28 Jun, 2023 (Wed) | Day of Arafat | State Holiday |
| 29 Jun, 2023 (Thu) | Hari Raya Haji | Federal Public Holiday |
| 30 Jun, 2023 (Fri) | Hari Raya Haji (Day 2) | State Holiday |
| 30 Jun, 2023 (Fri) | Hari Raya Haji (Day 2) | Federal Public Holiday |
| 7 Jul, 2023 (Fri) | George Town World Heritage City Day | State Holiday |
| 8 Jul, 2023 (Sat) | Penang Governor's Birthday | State Holiday |
| 17 Jul, 2023 (Mon) | Birthday of the Raja of Perlis | State Holiday |
| 19 Jul, 2023 (Wed) | Muharram/New Year | Federal Public Holiday |
| 22 Jul, 2023 (Sat) | Sarawak Independence Day | State Holiday |
| 30 Jul, 2023 (Sun) | Birthday of the Sultan of Pahang | State Holiday |
| 31 Jul, 2023 (Mon) | Birthday of the Sultan of Pahang observed | State Holiday |
| 14 Aug, 2023 (Mon) | Special Public Holiday | State Holiday |
| 23 Aug, 2023 (Wed) | Almarhum Sultan Iskandar Hol Day | State Holiday |
| 24 Aug, 2023 (Thu) | Birthday of the Governor of Malacca | State Holiday |
| 31 Aug, 2023 (Thu) | Malaysia's National Day | Federal Public Holiday |
| 16 Sep, 2023 (Sat) | Malaysia Day | Federal Public Holiday |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 28 Sep, 2023 (Thu) | The Prophet Muhammad's Birthday (Tentative Date) | Federal Public Holiday |
| 7 Oct, 2023 (Sat) | Birthday of the Governor of Sabah | State Holiday |
| 14 Oct, 2023 (Sat) | Birthday of the Governor of Sarawak | State Holiday |
| 3 Nov, 2023 (Fri) | Birthday of the Sultan of Perak | State Holiday |
| 11 Nov, 2023 (Sat) | Birthday of the Sultan of Kelantan | State Holiday |
| 12 Nov, 2023 (Sun) | Diwali/Deepavali | Federal Public Holiday |
| 12 Nov, 2023 (Sun) | Birthday of the Sultan of Kelantan (Day 2) | State Holiday |
| 11 Dec, 2023 (Mon) | Birthday of the Sultan of Selangor | State Holiday |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 24 Dec, 2023 (Sun) | Christmas Eve | State Holiday |
| 24 Dec, 2023 (Sun) | Christmas Eve | Observance |
| 25 Dec, 2023 (Mon) | Christmas Day | Federal Public Holiday |
| 31 Dec, 2023 (Sun) | New Year's Eve | Observance |
