| 1/1/1903, Thu | New Year's Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 1/29/1903, Thu | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
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| 2/23/1903, Mon | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
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| 3/10/1903, Tue | Hari Raya Aidil Adha |
- Note
- A statutory public holiday.
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| 3/30/1903, Mon | Islamic New Year |
- Note
- A statutory public holiday.
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| 6/1/1903, Mon | Royal Brunei Armed Forces Day: Actual Observance Day |
- Note
- A statutory public holiday.
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| 6/8/1903, Mon | Prophet Muhammad's Birthday |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
|
| 7/15/1903, Wed | H.M. The Sultan's Birthday |
- Note
- A statutory public holiday. H.M. Sultan Haji Hassanal Bolkiah's Birthday (born 15 July 1946).
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| 10/19/1903, Mon | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
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| 11/21/1903, Sat | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
|
| 12/7/1903, Mon | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
|
| 12/21/1903, Mon | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
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| 12/21/1903, Mon | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
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| 12/22/1903, Tue | Hari Raya Aidil Fitri (Day 2): Actual Observance Day |
- Note
- A statutory public holiday.
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| 12/22/1903, Tue | Hari Raya Aidil Fitri (Day 2): Actual Observance Day |
- Note
- A statutory public holiday.
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| 12/23/1903, Wed | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
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| 12/23/1903, Wed | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
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| 12/28/1903, Mon | Christmas Day: Actual Observance Day |
- Note
- A statutory public holiday.
|