Julio Xavier Labayen, OCD, DD (23 July 1926 – 27 April 2016) was a Roman Catholic bishop.
Ordained to the priesthood in 1955, Labayen served as bishop of the Territorial Prelature of Infanta, Philippines from 1966 until 2003.
He was the first Filipino Carmelite bishop when he was ordained on 8 September 1966 and the second bishop of the Prelature of Infanta.
He was a staunch defender of human rights, especially during the years of the Martial Law in the Philippines, being known to be one of the "Magnificent 7" who voiced their opposition against the Marcos regime.
In recognition of his efforts against authoritarian rule, his name was inscribed on the Wall of Remembrance at the Bantayog ng mga Bayani in 2016.
Aside from this, the bishop was the served as the chair of the CBCP's National Secretariat for Social Action-Justice and Peace (NASSA).