Gadong 'B' is a mukim in the Brunei-Muara district of Brunei. It is located in the central western part of the Brunei-Muara district bordering Mukim Gadong 'A' to the north, Mukim Berakas 'A' to the north-east, Mukim Kianggeh to the east and south and Mukim Kilanas to the south and west.
Mukim Gadong 'B' includes these following areas:
Note: As of July 2007 Mukim Gadong has officially been divided into two; Mukim Gadong 'A' which occupies the northern portion and Mukim Gadong 'B' which occupies the southern portion.
Coordinates: 4°31′34″N 114°37′09″E / 4.5262°N 114.6193°E