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The Ilhéu de Curral Velho and adjacent coast Important Bird Area lies in the southeastern part of the island of Boa Vista in the Cape Verdearchipelago off the coast of north-west Africa in the Atlantic Ocean. It is a 986 ha site consisting of the Ilhéu de Curral Velho, as well as the area opposite it on Boa Vista centred on the deserted village of Curral Velho. It was designated as a Ramsar wetland of international importance on July 18, 2005.
The 0.77 ha (1.9-acre) Ilhéu de Curral Velho is an unvegetated, heavily eroded, calcareous rock, 15 metres (49 ft) in height, lying some 500 m (1,600 ft) off the southernmost point of Boavista. The island and a 41 ha marine area around it are a protected nature reserve (Reserva Natural Integral Ilhéu de Curral Velho).