The islands occupy the northwestern corner of Lake Victoria, the second-largest freshwater lake in the world. The largest island in the archipelago is called Bugala Island.
Its largest town, called Kalangala serves as the headquarters of the district that carries the same name (Kalangala District). Kalangala is located approximately 51 kilometers (32 mi), across the water, southwest of Entebbe, in Wakiso District, on the Ugandan mainland. The islands lie in two main groups.