The Lebrun Islands belong to Louisiade Archipelago . They are located 12 km northwest of Wari Island and 22 km northeast of the Dumoulin Islands. Rika Rika is the larger of the two islands that make up the group. The highest elevation on Rika Rika is 109 m. Dogigi is located 4.5 km south of Rika Rika.
Administratively, the island belongs to Bwanabwana Rural LLG (Local Level Government area) of Samarai-Murua District in Milne Bay Province. They are administered in the Ward of Wari.