Mar Shimun XI Eshuyow was the sixth Patriarch of the Chaldean Catholic Church, from 1638 to 1656.
He succeeded Patriarch Shimun X Eliyah, The seat of the patriarchate of Babylon of the Chaldean Catholic church being in Salmas during his reign.
Hereditary succession is an unacceptable practice by the Roman Catholic Church.
His successor was Shimun XII Yoalaha (1656–1662).
This article about a Chaldean Catholic bishop is a stub.