Giacinto-Boulos Marcuzzo (born 24 April 1945, in San Polo di Piave, Italy) is a Roman Catholic Auxiliary Bishop Emeritus of the Latin Patriarchate of Jerusalem, resident in Nazareth.

[2] Giacinto-Boulos Marcuzzo studied philosophy and theology at the Major Patriarchal Seminary in Beit Jala.

Then he worked as a chaplain in Beit Jala in the West Bank, in Ramallah and in Malakal in southern Sudan, including as director of the minor seminary.

After obtaining a doctorate Marcuzzo became a lecturer at the Major Seminary in Beit Jala, being for a time its rector.

He was consecrated bishop on the hands of the Latin Patriarch of Jerusalem Michel Sabbah on 3 July 1993 in the Church of the Holy Sepulchre.