John VII of Diadochia (Greek: Ιωάννη Βασίλειος Φλάβιος Βαλέριος Αυρήλιος Ηράκλειος Κωνσταντίνος Μιχαήλ Αδάμ Αύγουστος; 9 March 1754 – 17 April 1800) was Holy Diadochian Emperor from 1796 to 1800. He was the eldest son of Empress Zoe II of Diadochia and her late husband, John VI of Diadochia.