🇧🇳 Brunei
Unitary state, absolute monarchy, Islamic state
Hassanal Bolkiah I of Brunei
Monarch · 1,546 days in office
Tenure records
Longest-serving
Hassanal Bolkiah I of Brunei
21,515 days
Shortest-serving
Muhammad Alam of Brunei
730 days
Average tenure
6,765 days
Hassanal Bolkiah I of Brunei: 77% below average
Recent monarchs by days in office
Is a leader's tenure getting longer or shorter in Brunei?
Across 10 completed terms, the average monarch of Brunei has served 6,765 days (about 18.5 years). Terms are getting longer: the last five completed terms averaged 8,454 days.
One completed term Average tenure per decade
All monarchs of Brunei
| # | Name | Took office | Left office | Days |
|---|---|---|---|---|
| 12 |  Hassanal Bolkiah I of Brunei | Oct 5, 1967 | Incumbent | 21,515 |
| 11 |  Omar Ali Saifuddien III of Brunei | Jun 4, 1950 | Oct 4, 1967 | 6,331 |
| 10 |  Ahmad Tajuddin of Brunei | Sep 11, 1924 | Jun 3, 1950 | 9,396 |
| 9 |  Muhammad Jamalul Alam II | May 10, 1906 | Sep 11, 1924 | 6,699 |
| 8 |  Hashim Jalilul Alam Aqamaddin of Brunei | May 29, 1885 | May 1, 1906 | 7,641 |
| 7 |  Abdul Momin of Brunei | Jan 1, 1852 | May 30, 1885 | 12,203 |
| 6 |  Omar Ali Saifuddin II of Brunei | Jan 1, 1828 | Jan 1, 1852 | 8,766 |
| 5 | Muhammad Alam of Brunei | Jan 1, 1826 | Jan 1, 1828 | 730 |
| 4 | Muhammad Kanzul Alam of Brunei | Jan 1, 1807 | Jan 1, 1826 | 6,940 |
| 3 | Husin Kamaluddin of Brunei | Jan 1, 1737 | Jan 1, 1740 | 1,095 |
| 2 | Husin Kamaluddin of Brunei | Jan 1, 1710 | Jan 1, 1730 | 7,305 |
| 1 | Nasruddin of Brunei | Jan 1, 1690 | Jan 1, 1710 | 7,304 |
Officeholder history via Wikidata. Multiple rows for one person indicate separate terms.
Frequently asked questions
- Who is the Monarch of Brunei?
- Hassanal Bolkiah I of Brunei has been Monarch of Brunei since Jun 7, 2022.
- Who is the longest-serving Monarch of Brunei?
- Hassanal Bolkiah I of Brunei, with 21,515 days in office.
- Are leaders serving longer or shorter terms in Brunei?
- Across 10 completed terms, the average monarch of Brunei has served 6,765 days (about 18.5 years). Terms are getting longer: the last five completed terms averaged 8,454 days.