Celestino Migliore (born 1 July 1952 in Cuneo, Italy) is an Italian Archbishop of the Roman Catholic Church who currently serves as the Apostolic Nuncio to Poland. He had previously served as Permanent Observer of the Holy See to the United Nations. He is Titular Archbishop of Canosa. He has spent most of his career in the diplomatic service of the Holy See.
Ordained as a priest on 25 June 1977, Archbishop Migliore has a master degree in theology from the Center of Theological Studies in Fossano, Italy, and a Licenciate and Doctorate in Canon Law from the Pontifical Lateran University in Rome. In 1980, after graduating from the Pontifical Ecclesiastical Academy, he joined the Holy See's diplomatic service. He speaks Italian, French, English, and Polish.
Migliore served as attaché and second secretary to the Apostolic Delegation in Angola from 1980 to 1984. In 1984, he was assigned to the Apostolic Nunciature in the United States, then in 1988, he was assigned to the Apostolic Nunciature in Egypt, and again in 1989 he was then assigned at the Apostolic Nunciature in Warsaw, Poland. In 1992, he was appointed as Special Envoy to the Council of Europe in Strasbourg, France until 1995 when he served as Under-Secretary of the Section for Relations with States of the Secretariat of State, at the Vatican. During his term as Under-Secretary he was also in charge of fostering relations with countries that did not yet have formal relations with the Holy See, and in that capacity he led delegations to China, Vietnam, North Korea, and numerous United Nations conferences. He also taught ecclesiastical diplomacy at the Pontifical Lateran University, as a visiting professor.
Permanent Observer to the United Nations
|Reference style||The Most Reverend|
|Spoken style||His Excellency|
|Posthumous style||not applicable|
On 30 October 2002 His Holiness Pope John Paul II nominated the Archbishop to the position of Permanent Observer, to the United Nations. He is the fourth person to serve in the role. At the same time he was also appointed Titular Archbishop of Canosa. He received his episcopal ordaination on 6 January 2003.
During the tenure of Archbishop Migliore Pope Benedict XVI made a pastoral visit to the United Nations Headquarters (on April 18, 2008) during which time he met with the Secretary-General Ban Ki-moon, and addressed the General Assembly and the Staff.
In November 2008, Archbishop Migliore led the delegation of the Holy See to the Follow-up International Conference on Financing for Development to Review the Implementation of the Monterrey Consensus in Doha, Qatar, during which he stressed the importance of right action and the human person, stating that "Global development is, at its heart, a question not only of technical logistics but more fundamentally of morality" and that "Social and economic development must be measured and implemented with the human person at the center of all decisions." 
In response to a proposed nonbinding UN declaration on LGBT rights introduced at the United Nations by member States of the European Union, Archbishop Migliore said that unjust forms of discrimination against homosexuals must be avoided but he also said that adding such "new categories (that would be) protected from discrimination" would create in turn "new and inflexible (forms of) discrimination." . He continued by saying that "Countries that don't recognize the union between people of the same sex as marriage will be punished and pressured." The proposed declaration does not in fact mention same-sex marriage but most of the nations that support the document do recognize same-sex unions. 
Speaking on the 2008–2009 Israel–Gaza conflict, Archbishop Migliore said that the Holy See "would like to express its solidarity with the civilians in those regions who bear the brunt of a cruel conflict;" "that Security Council resolution 1860, of January 8, which calls for an immediate and enduring ceasefire as well as for an unimpeded humanitarian assistance, be implemented fully;" and "that so many failed efforts are due to insufficiently courageous and coherent political will for establishing peace, from every side, and ultimately an unwillingness to come together and forge a just and lasting peace." 
On 6 May 2009 Archbishop Migliore called for "concrete, transparent and convincing steps" towards nuclear disarmament and non-proliferation. Speaking to the third session of the Preparatory Committee for the 2010 U.N. Conference on the Non-Proliferation of Nuclear Weapons, the archbishop said the Treaty on the Non-Proliferation of Weapons (NPT) remains a “cornerstone” of nuclear disarmament after four decades. “The Holy See reaffirms its strong and continuing support for the NPT and calls for universal and full adherence to and compliance with the Treaty” he said. The first measure suggested by the archbishop was starting negotiations for a Fissile Material Cut-Off Treaty, which he said are “overdue.” Archbishop Migliore also advocated that the peaceful use of nuclear energy should be under “strict control” of the International Atomic Energy Agency. 
Nuncio to Poland
Archbishop Migliore was appointed as Apostolic Nuncio to Poland on 30 June 2010 replacing Archbishop Józef Kowalczyk who had previously been appointed as Archbishop of Gniezno and Primate of Poland. In July 2010 Archbishop Francis Chullikatt was appointed to succeed Archbishop Migliore at the United Nations.
|Catholic Church titles|
Claudio Maria Celli
|Undersecretary for Relations with States
16 December 1995 – 30 October 2002
Renato Raffaele Martino
|Permanent Observer of the Holy See to the United Nations
30 October 2002 – 30 June 2010
|Apostolic Nuncio to Poland
30 June 2010 – present