Rogelio Pfirter

From 2015 to 2019, Pfirter was Argentina's ambassador to the Holy See. Pfirter was appointed by President Mauricio Macri to succeed Eduardo Valdés, upon Pope Francis's suggestion. During Pfirter's ambassadorship, Macri and Pope Francis met on two occasions. Pfirter stepped down upon the election of Alberto Fernández as president in 2019; he was succeeded by María Fernanda Silva.

After retiring in 2010, he became a member of the Global Council on Weapons of Mass Destruction at the World Economic Forum.

In 2002, Pfirter was unanimously elected the Director-General of the Organisation for the Prohibition of Chemical Weapons (OPCW) in The Hague, The Netherlands. He was elected for a second term in 2006. Pfirter’s tenure was praised as a time of consolidation and strengthening of the OPCW after the controversial departure of his predecessor José Bustani. Pfirter gathered support for chemical weapons destruction and as a manager he succeeded in administering the Secretariat with zero nominal growth (ZNG) for four years in a row.

During his diplomatic career, Pfirter held various positions at the Argentine Foreign Ministry. In 1992 he was promoted to the rank of Ambassador and in the same year he became the Director of the Argentine-Brazilian Agency for Accounting and Control of Nuclear Materials (ABACC) and the Director of the Argentine Space Agency (CONAE). He was subsequently appointed Undersecretary for Foreign Policy at the Argentine Foreign Ministry. From 1995 to 2000, during the presidency of Carlos Menem, Pfirter was Argentina's ambassador to the United Kingdom.

Rogelio Pfirter (born 25 August 1948) is an Argentine diplomat who served as Argentina's ambassador to the United Kingdom and to the Holy See. He was the Director General of the Organisation for the Prohibition of Chemical Weapons (OPCW) from 2002 to 2010.

Pfirter was born in Santa Fe, Santa Fe Province, on 25 August 1948. He graduated as a lawyer from the Universidad Nacional del Litoral. He is married to Isabel Serantes Braun.