Fermín Emilio Sosa Rodríguez (born 12 April 1968) is a Mexican archbishop of the Catholic Church who works in the diplomatic service of the Holy See.

He was ordained a priest of the archdiocese of Yucatán on 12 July 1998 by Cardinal Darío Castrillón Hoyos in the cathedral of Guadalupe.

In October of that year, he entered the Pontifical Ecclesiastical Academy to prepare for a career in the diplomatic service.

His assignments included postings in the papal representations in Papua New Guinea, Côte d'Ivoire, Burkina Faso, the United States of America, Canada, and Serbia.

[2][3] On 31 March 2021, Pope Francis appointed him titular archbishop of Virunum and apostolic nuncio to Papua New Guinea.