Charles-François de Broglie, marquis de Ruffec

Charles-François de Broglie, marquis de Ruffec (1719–1781), was a French general and diplomat, second son of the first duc de Broglie. He fought in the War of the Austrian Succession and the Seven Years' War.

As ambassador to Poland from 1752 he secretly sought to place the prince de Conti on the Polish throne, but the Anglo-Prussian alliance of 1756 overturned his plans. From 1767 he headed Louis XV's private intelligence network, the Secret du Roi. Exiled to Ruffec in 1771, he continued to advise the king in secret.

With Beaumarchais he organized covert French aid to the American insurgents, helping finance La Fayette's voyage in 1777. He died in 1781 and was buried in Angoulême Cathedral.