Eulogio Gregorio Clemente Gillow y Zavala was the first archbishop of the Roman Catholic Archdiocese of Antequera, Oaxaca located in Oaxaca de Juarez, Oaxaca, Mexico.
He was the key cleric in President Porfirio DÃaz's policy of conciliation with the Roman Catholic Church, which kept the anticlerical articles of the liberal Constitution of 1857 in place but suspended their implementation.