7 Years War Louis Charles César Le Tellier, Duke of Estrées (2 July 1695 – 2 January 1771) was a French military commander and Marshal of France.

His father was Michel François Le Tellier [Wikidata] (1663–1721), marquis de Courtenvaux, himself son of Louis XIV's War Minister François Michel Le Tellier, Marquis de Louvois.

A Marshal of France since 24 February 1757, he was commander of the armies in Westphalia during the Seven Years' War.

On 26 July 1757, he won the Battle of Hastenbeck against Hanoverian and Hessian troops under the Duke of Cumberland during the Invasion of Hanover but was replaced as French commander shortly afterwards.

He became a knight in the Order of the Holy Spirit in 1746 and received the title of Duc d'Estrées in 1763 from his mother's family.