De Retz may refer to:
People Henri de Gondi, duc de Retz (1590–1659), French nobleman of the Gondi family Jean-Georges du Croiset de Retz, French Navy officer Jean François Paul de Gondi (1613–1679), Cardinal de Retz, Archbishop of Paris (1654–1652)
Places Désert de Retz, garden on the edge of the Forêt de Marly in central France Pays de Retz, historical subregion of France Pornic Agglo Pays de Retz, French agglomeration community
Others Gilles de Retz (horse) (1953–1969), British racehorse Le Courrier du pays de Retz, French weekly regional information newspaper