César d'Estrées (5 February 1628 – 18 December 1714) was a French diplomat and cardinal.
His brother was Marshal Jean II d'Estrées.
Estrées was abbot of the Abbey of Saint-Germain-des-Prés, Duke-Bishop of Laon and a cardinal.
He was also French ambassador in Rome and Spain, commander in the Order of the Holy Spirit and a pair de France.
This article about a Roman Catholic cardinal from France is a stub.