Theodor Anton Max Ippen (November 29, 1861 – January 31, 1935) was an Albanologist and diplomat from Austria-Hungary. Ippen belonged to the group of Albanologists who published their works on Albania through the state-financed institutes of Austria-Hungary in order to create the Albanian national consciousness which he believed would be beneficial for Dual Monarchy. Ippen supported the establishment of an independent nation-state of Albanians. He served as diplomat in Shkoder, Pljevlja, Istanbul, Jerusalem, Athens and London where he advised ambassador of Austria-Hungary during London Conference which ended with signing of the London treaty and a decision to establish the Principality of Albania reached on 29 July 1913. During the period between 1921 and 1927, he was a member of the International Danube Commission.