| 1/1/1983, Sat | New Year's Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 2/14/1983, Mon | Chinese New Year: Actual Observance Day |
- Note
- A statutory public holiday (Tahun Baru Cina).
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| 2/23/1983, Wed | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
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| 5/10/1983, Tue | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
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| 5/31/1983, Tue | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
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| 6/13/1983, Mon | First Day of Ramadan: Actual Observance Day |
- Note
- A statutory public holiday (Awal Ramadan).
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| 6/28/1983, Tue | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
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| 7/12/1983, Tue | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
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| 7/13/1983, Wed | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
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| 7/14/1983, Thu | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
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| 7/18/1983, 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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| 9/19/1983, Mon | Hari Raya Aidil Adha: Actual Observance Day |
- Note
- A statutory public holiday.
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| 10/8/1983, Sat | Islamic New Year |
- Note
- A statutory public holiday.
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| 12/17/1983, Sat | Prophet Muhammad's Birthday |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
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| 12/26/1983, Mon | Christmas Day: Actual Observance Day |
- Note
- A statutory public holiday.
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