Archduke Carl Christian of Austria (German: Carl Christian Maria Anna Rudolph Anton Marcus d'Aviano, Erzherzog und Prinz von Österreich, Prinz von Ungarn, Kroatien, und Böhmen; born 26 August 1954 at Château de Belœil in Belœil, Belgium) is a Belgian aristocrat and a member of the formerly ruling Austro-Hungarian House of Habsburg-Lorraine.
He is the third child of Archduke Carl Ludwig of Austria and his wife, Princess Yolande de Ligne.