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Archdiocese of TijuanaBishop
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Bishop Mario Nicolás Villanueva Arellano

Apostolic Administrator of Tijuana

Coat of arms
Born
Jan 19, 1971 Pénjamo Municipality, Guanajuato, Mexico
Nationality
Mexico
Ordained priest
Jul 12, 2003 Juan Sarabia 8585, Mexico
Ordained bishop
Nov 29, 2024 Archdioc, Titular
Appointed
Nov 4, 2025
Principal consecrator
Francisco Moreno Barrón
Co-consecrators
Joseph Spiteri Robert Walter McElroy

Mario Nicolás Villanueva Arellano was born on January 19, 1971, in Pénjamo, in the Diocese of Irapuato. After studying accounting and gaining work experience in the field, he was ordained a priest on July 12, 2003, for the Metropolitan Archdiocese of Tijuana. He has held the following positions: parochial vicar, bursar of the diocesan seminary, chaplain of the Shrine of Our Lady of the Sacred Heart, and spiritual director at the seminary. He currently serves as Episcopal Vicar for the Clergy and as a member of the Diocesan Council for Economic Affairs.