| name | office head of government | Mayor | image | Area (m²) | date founded | Elevation (m) | Country | administrative division | continent | latitude (°) | waterbody | longitude (°) | Website | population (people) | Demonym | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bandar Seri Begawan |  | 100,360,000 | 14 | Brunei | Brunei-Muara District | Asia | 4.8902778625 | Brunei river | 114.9422225952 | website | 50,000 | Map | ||||
| Seria |  | 603,000 | Brunei | Belait District | Asia | 4.5999999046 | 114.3333358765 | website | 21,082 | Map | ||||||
| Seria, Belait | Brunei | Belait District | Asia | 4.5999999046 | 114.3333358765 | website | 13,093 | Map | ||||||||
| Kuala Belait |  | 5 | Brunei | Belait District | Asia | 4.5833334923 | 114.1833343506 | website | 30,267 | Map |