Diogo Fernandes Pereira, sometimes called simply Diogo Fernandes, was a Portuguese 16th-century navigator, originally from Setúbal, Portugal. Diogo Fernandes was the first known European captain to visit the island of Socotra in 1503 and the discoverer of the Mascarenes archipelago (Réunion, Mauritius, and Rodrigues) in 1507. He may also have been the first European to sail east of Madagascar island ('outer route' to the East Indies).