Hyacinthe Gaëtan de Lannion (1719–1762) was a French politician and administrator. From 1735 to 1762 he was the Governor of Vannes in Brittany, a hereditary post he inherited from his father Anne de Lannion along with the *le Count of Lannion. In 1756 following France's successful siege of the strategic British base of Minorca he was appointed Governor of Minorca a position he held until 1758 and then again between 1760 and 1762. He died in 1762, and was succeeded in his *le by Emmanuel Marie Louis de Noailles.

See also

• List of Governors of Minorca
• France in the Seven Years War