| 1/1/1973, Mon | New Year's Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
|
| 1/15/1973, Mon | Hari Raya Aidil Adha |
- Note
- A statutory public holiday.
|
| 2/3/1973, Sat | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
|
| 2/5/1973, Mon | Islamic New Year: Actual Observance Day |
- Note
- A statutory public holiday.
|
| 2/26/1973, Mon | National Day of Brunei Darussalam: Actual Observance Day |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 4/16/1973, Mon | Prophet Muhammad's Birthday: Actual Observance Day |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
|
| 5/31/1973, Thu | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
|
| 7/16/1973, 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).
|
| 8/27/1973, Mon | Isra' and Mi'raj: Actual Observance Day |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
|
| 10/1/1973, Mon | First Day of Ramadan: Actual Observance Day |
- Note
- A statutory public holiday (Awal Ramadan).
|
| 10/15/1973, Mon | Nuzul Al-Quran: Actual Observance Day |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
|
| 10/29/1973, Mon | Hari Raya Aidil Fitri (Day 1): Actual Observance Day |
- Note
- A statutory public holiday.
|
| 10/29/1973, Mon | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
|
| 10/30/1973, Tue | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
|
| 12/25/1973, Tue | Christmas Day |
- Note
- A statutory public holiday.
|