The commune of Bir Gandouz is located in the south-west of the Aousserd province, in a nomadic area. It is composed of several localities, the main ones being Bir Gandouz, Guerguerat, Lamhiriz, Imoutlane and Aïn Bida.
It is bordered by:
- the commune of Imlili to the north;
- the commune of Tichla to the east;
- the municipality of Lagouira and Mauritania to the south;
- the Atlantic Ocean to the west.
