Gabriel Antonio Mestre (born 15 September 1968) is an Argentine Catholic prelate who served as Archbishop of La Plata from 2023 to 2024.

He obtained a licentiate in biblical theology from the Pontifical Catholic University of Argentina,[2] while working in a local parish and living at the major seminary of Buenos Aires.

He was also a member of the priests council and the college of consulters, vice rector and professor at the University School of Theology in Mar del Plata, and a founder and councillor of the diocesan secretariat for family pastoral care from 2010 to 2014.

Within CELAM, he served as a member of the Biblical Pastoral Centre for Latin America and the Caribbean.

[4] He received his episcopal consecration on 16 August[3] from Antonio Marino, Bishop Emeritus of Mar del Plata.