Michael Domenec, DD, C.M. (Catalan: Miquel Domènech i Veciana; 1816–1878) full name Miquel Joan Josep Domènech i Veciana, was a Spanish prelate of the Roman Catholic Church. He served as the second bishop of the Diocese of Pittsburgh in Pennsylvania from 1860 to 1876 and as the only bishop of the short-lived Diocese of Allegheny in Pennsylvania from 1876 to 1877.