A mukim is a second-level administrative division of Brunei Darussalam, and the primary sub-division of a larger district (). There are thirty-nine mukims within the four districts of the sultanate Brunei Darussalam. A mukim is led by a , since 2015 elected by democratic vote. A mukim encompasses a number of villages, known in Malay as or . Mukims are administered by the district office of the district where they are located.