Rimatara is the westernmost inhabited island in the Austral Islands of French Polynesia. It is located 550 km south of Tahiti and 150 km west of Rurutu. The land area of Rimatara is 8.6 km², and that of the Maria islets is 1.3 km². Its highest point is 106 m. Its population was 893 at the 2022 census.