Adonara is an island in the Lesser Sunda Islands of Indonesia, located east of the larger island of Flores in the Solor Archipelago. To the east lies Lembata, formerly known as Lomblen. Adonara is the highest of the islands of the archipelago, reaching an altitude of 1,659 metres, and it has an area of 529.75 km2. It is situated administratively in the East Flores Regency of East Nusa Tenggara province.