Alexandre Jean-Baptiste de Boyer, Marquis d’Éguilles (29 March 1709 – 8 October 1783) was a French administrator who served as an unofficial envoy to Charles Edward Stuart during the 1745 Jacobite Rebellion. Taken prisoner after the Battle of Culloden in April 1746, he was released in 1747 and later held a senior legal post in the Provencal Regional Parliament. He was exiled from France in 1763 for opposing the suppression of the Jesuits but allowed to return in 1768 and died at home in March 1783.