Mar Shimun XIII Dinkha was Patriarch of the Chaldean Catholic Church carrying the title Patriarch of Babylon between 1662 and 1692 in communion with Rome and residing in Khosrau-Abad near Salmas. He was the last in the hereditary Shimun line of Patriarchs in the Chaldean Catholic Church and, like his predecessors Shimun X Eliyah (1600–1638), Shimun XI Eshuyow (1638–1656) and Shimun XII Yoalaha (1656–1662), was allegedly not officially recognized by Rome since the Catholic church does not approve of hereditary patriarchates.