| 1/1/2003, Wed | New Year's Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 2/1/2003, Sat | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
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| 2/12/2003, Wed | Hari Raya Aidil Adha |
- Note
- A statutory public holiday.
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| 2/24/2003, Mon | National Day of Brunei Darussalam: Actual Observance Day |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 3/5/2003, Wed | Islamic New Year |
- Note
- A statutory public holiday.
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| 5/14/2003, Wed | Prophet Muhammad's Birthday |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
|
| 5/31/2003, Sat | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
|
| 7/15/2003, Tue | H.M. The Sultan's Birthday |
- Note
- A statutory public holiday. H.M. Sultan Haji Hassanal Bolkiah's Birthday (born 15 July 1946).
|
| 9/24/2003, Wed | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
|
| 10/27/2003, Mon | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
|
| 11/12/2003, Wed | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
|
| 11/26/2003, Wed | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
|
| 11/27/2003, Thu | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
|
| 12/1/2003, Mon | Hari Raya Aidil Fitri (Day 3): Actual Observance Day |
- Note
- A statutory public holiday.
|
| 12/25/2003, Thu | Christmas Day |
- Note
- A statutory public holiday.
|