Jean Ango (or Jehan Angot) (1480–1551) was a French ship-owner who provided ships to Francis I for exploration of the globe. A native of Dieppe, Ango took over his father's import-export business, and ventured into the spice trade with Africa and India. He was one of the first French to challenge the monopoly of Spain and Portugal, in addition to trading with the eastern Mediterranean, the British Isles, and the Low Countries. He also helped to finance the voyages of Giovanni da Verrazzano and Jacques Cartier.
His father (also named Jean Ango) sent two ships to Newfoundland in an early colonization attempt, including Thomas Aubert as captain of the Pensée. Their arrival in 1508 is the second recorded voyage of a French ship to the Grand Banks after the expedition of John Cabot. After his father's death (probably in the final years of the reign of King Louis XII), the younger Jean Ango stopped any personal participation in trading voyages and settled in Dieppe with his inherited fortune.
He eventually controlled a fleet, partially or alone, of 70 ships, including merchant ships and fishing vessels. Although he funded expeditions for trade and exploration, and used his ships (legally) for wartime raids, "he also sponsored voyages whose only purpose was piracy".
Ango was an intimate friend of King Francis I. In 1521 he was styled Viscount of Dieppe, and in 1533, after the king had visited him in his mansion in Normandy, captain of Dieppe. When John III of Portugal confiscated one of his ships which carried plunder from captured vessels, Ango received the French king's permission to respond. Acting under a letter of marque issued on 26 July 1530, he harassed the Portuguese fleet in the Atlantic, and even threatened to block the port of Lisbon. On 15 August 1531, the Portuguese king agreed to pay reparations of 60,000 ducats in return for Ango's agreement to stop his actions and surrender the letter of marque which permitted them.
He lost popularity under King Henry II. Already nearly bankupt after his forced participation in a royal armament project, he was imprisoned after 1549 for failing to pay taxes on his profits from privateering.
In his book La chanson des pilotes, he was the first to describe in writing the use of tobacco.