| 1/4/1988, Mon | New Year's Day: Actual Observance Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 2/17/1988, Wed | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
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| 2/23/1988, Tue | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 3/16/1988, Wed | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
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| 4/18/1988, Mon | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
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| 5/4/1988, Wed | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
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| 5/18/1988, Wed | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
|
| 5/19/1988, Thu | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
|
| 5/23/1988, Mon | Hari Raya Aidil Fitri (Day 3): Actual Observance Day |
- Note
- A statutory public holiday.
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| 5/31/1988, Tue | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
|
| 7/18/1988, Mon | H.M. The Sultan's Birthday: Actual Observance Day |
- Note
- A statutory public holiday. H.M. Sultan Haji Hassanal Bolkiah's Birthday (born 15 July 1946).
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| 7/25/1988, Mon | Hari Raya Aidil Adha |
- Note
- A statutory public holiday.
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| 8/15/1988, Mon | Islamic New Year: Actual Observance Day |
- Note
- A statutory public holiday.
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| 10/24/1988, Mon | Prophet Muhammad's Birthday: Actual Observance Day |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
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| 12/26/1988, Mon | Christmas Day: Actual Observance Day |
- Note
- A statutory public holiday.
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