João Gonçalves Zarco (c. 1390 – 21 November 1471) was a Portuguese explorer who established settlements and recognition of the Madeira Islands, and was appointed first captain of Funchal by Henry the Navigator.

Zarco was born in Portugal, and became a knight at the service of Prince Henry the Navigator's household. In his service at an early age, Zarco commanded the caravels guarding the coast of the Algarve from Muslim incursions, was at the conquest of Ceuta, and later led the caravels that recognized the island of Porto Santo in 1418 to 1419 and afterward, the island of Madeira 1419 to 1420. He founded the city of Câmara de Lobos. He was granted, as hereditary leader (Capitania), half the island of Madeira (the Capitania of Funchal, being its first Captain-major). Together with his fellow fleet commanders, Tristão Vaz Teixeira and Bartolomeu Perestrelo, he initiated the colonization of the islands in 1425. As a knight of the House of Avis, he participated in the siege of Tangier, in 1437, which ended in failure. He died at Funchal, Madeira.

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