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César d'Estrées (5 February 1628 – 18 December 1714) was a French diplomat and Cardinal.
Estrées was abbot of the Abbey of Saint-Germain-des-Prés, Duke-Bishop of Laon, a cardinal, and he was French ambassador in Rome and Spain, commander in the Order of the Holy Spirit and pair de France. He was elected member of the Académie française in 1658.