| 1/4/1999, Mon | New Year's Day: Actual Observance Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 1/19/1999, Tue | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
|
| 1/20/1999, Wed | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
|
| 1/21/1999, Thu | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
|
| 2/16/1999, Tue | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
|
| 2/23/1999, Tue | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 3/29/1999, Mon | Hari Raya Aidil Adha: Actual Observance Day |
- Note
- A statutory public holiday.
|
| 4/17/1999, Sat | Islamic New Year |
- Note
- A statutory public holiday.
|
| 5/31/1999, Mon | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
|
| 6/26/1999, Sat | Prophet Muhammad's Birthday |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
|
| 7/15/1999, Thu | 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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| 11/6/1999, Sat | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
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| 12/9/1999, Thu | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
|
| 12/25/1999, Sat | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
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| 12/25/1999, Sat | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
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| 12/25/1999, Sat | Christmas Day |
- Note
- A statutory public holiday.
|