A mukim is a subdivision of a daerah (district) in Malaysia and Brunei. The equivalent of the word mukims in English would be 'sub-districts'.
Brunei
There are 38 mukims in Brunei. Each mukim is an administrative area made up of several Kampung (Malay for "village"). A Mukim is headed by a Penghulu, which is an elected office. The number of mukims in each of the districts in Brunei is as follows:
| District | Number of Mukims |
| Belait | 8 |
| Brunei-Muara | 17 |
| Temburong | 5 |
| Tutong | 8 |
The smallest mukim by area is Mukim Saba in the Brunei-Muara District. The largest mukim by area is Mukim Sukang in the Belait District. The last change in the mukim boundaries was in the late 1990s when Mukim Kumbang Pasang was merged into Mukim Kianggeh and Mukim Berakas was divided into Mukim Berakas A and Mukim Berakas B. The number of mukims remained at 38.
