Thomas Penson De Quincey (distaget /də ˈkwɪnsi/; Manchester, Lancashire, 15 Eost 1785 – Dinedin, Bro-Skos, 8 Kerzu 1859) a oa ur skrivagner saoz. Brudet eo e levr Confessions of an English Opium-Eater e 1821.