Segundo Montes, S.J. (Valladolid, Spain, May 15, 1933 – San Salvador, El Salvador, November 16, 1989) was a scholar, philosopher, educator, sociologist and Jesuit priest. Segundo Montes was a close friend and colleague of the scholars Ignacio Martín-Baró and Ignacio Ellacuría, all of whom were murdered with Montes by the Salvadoran army, along with three other colleagues and two other employees (see The murdered scholars of UCA).
Segundo Montes grew up in Valladolid, Spain, where he also went to secondary school until 1950. On August 15, 1950, he entered the novitiate of the Society of Jesus in Orduña. After a year there, he moved to Santa Tecla in El Salvador under the mentorship of Miguel Elizondo, who described him as an adolescent who hit the football so hard against the wall of the Iglesia El Carmen that he rattled the roof tiles.
When he fulfilled his studies in the novitiate in 1952, he followed the steps of other Jesuit students in Central America and moved to Quito to study classical humanities at the Catholic University. In 1954, he began studies in philosophy, fulfilling his licenciatura (licenciate) in 1957. He then returned to San Salvador to teach at the school Externado San José. In 1960, he returned to university to study theology. He started in Oña, where he lived for a year. He later moved to Innsbruck, where he completed the three remaining years of studies. He was ordained a priest July 25, 1963. He returned to Externado San José as a teacher and was naturalised as a Salvadoran citizen.