Charles de Tubières de Pastel de Levoy de Grimoire, marquis de Caylus (1698 – 12 May 1750) was a French naval officer who was governor-general of the French Windward Islands from 1745 to 1750. He had dissipated a considerable fortune and was deeply in debt when he took office, and used his power in wartime conditions to establish lucrative illegal arrangements to trade with France's enemies the English and the Dutch. A young nobleman arrived in Martinique in 1748, and for several months used revenues from his family estates on the island to give meals and dances for the elite. After he left it was found that he had been an impostor.