Duarte Lobo (c. 1565 – 24 September 1646; Latinized as Eduardus Lupus) was a Portuguese composer of the late Renaissance and early Baroque.

His first position was as mestre de capela of the cathedral of Évora sometime before 1589, he became maestro di cappella at the Hospital Real, Lisbon.

He also served as director of the Seminary of São Bartolomeu, and was also a professor of music at the 'Colégio do Claustro da Sé' (College at the Holy See Cloisters) in Lisbon, where he taught Manuel Machado.

While chronologically his life overlapped with the beginning of the Baroque music era, he was a rather conservative composer who followed the techniques of the Renaissance masters of the previous generation.

Free scores by Duarte Lobo in the Choral Public Domain Library (ChoralWiki)