Dominique Mamberti
Estonian Ministry of Foreign Affairs; crop: Gugganij / Wikimedia Commons
 Cardinal-Deacon · Created by Francis

Dominique Mamberti

Prefect of the Supreme Tribunal of the Apostolic Signatura

Moroccan-born French cardinal and career Holy See diplomat: nuncio in Sudan and Eritrea, Secretary for Relations with States from 2006 to 2015, and since 2014 Prefect of the Supreme Tribunal of the Apostolic Signatura; as protodeacon he announced the election of Pope Leo XIV in 2025.

Born
7 March 1952 · age 74
Nation
🇫🇷 France
Created cardinal
14 February 2015
Status
Cardinal elector
The Life

Dominique Mamberti was born on 7 March 1952 in Marrakech, Morocco, to French parents who returned to France shortly after his birth. He studied public law and political science, entered the Pontifical French Seminary in Rome, and was ordained a priest on 20 September 1981 for the Diocese of Ajaccio, Corsica. After a degree in canon law and studies at the Pontifical Ecclesiastical Academy, he entered the diplomatic service of the Holy See on 1 March 1986, serving in Algeria (1986–1990), Chile (1990–1993), at the United Nations in New York (1993–1996), in Lebanon (1996–1999), and in the Section for Relations with States of the Secretariat of State (1999–2002).

He received episcopal ordination on 3 July 2002, following his appointment as Apostolic Nuncio in Sudan, titular Archbishop of Sagona and Apostolic Delegate in Somalia. On 19 February 2004 he was appointed Apostolic Nuncio in Eritrea. On 15 September 2006 Benedict XVI appointed him Secretary for Relations with States — the Holy See's equivalent of a foreign minister — a post he held until mid-January 2015, leading Holy See delegations at the United Nations General Assembly and the OSCE. On 8 November 2014 Pope Francis appointed him Prefect of the Supreme Tribunal of the Apostolic Signature, and on 28 April 2015 President of the Commission for Lawyers.

Pope Francis created him a cardinal in the consistory of 15 February 2015 (Holy See biography dating), assigning him the titular church of Santo Spirito in Sassia. As cardinal protodeacon he participated in the 2025 conclave and, on 8 May 2025, announced the election of Pope Leo XIV from the balcony of Saint Peter's Basilica.

In His Own Words

Consequential Quotes

My heart is filled with gratitude to the Holy Father for the confidence he has expressed in naming me among the cardinals, who are also his advisers.
Interview with Vatican Radio, reported by ZENIT, 5 January 2015
Certainly, a dialogue with Islam may be pursued and must be pursued.
Interview with Catholic News Agency, reported by Angelus News, 13 May 2015
I think that the Middle East is for us an open wound, in particular due to the plight of Christians and because of the risks this plight bears for the stability not only of the geographical region, but for the stability of the whole world.
Interview with Catholic News Agency, reported by Angelus News, 13 May 2015
Christian communities are suffering unjustly, they are scared and many Christians have been forced to emigrate.
Note to ambassadors accredited to the Holy See, July 2014, reported by Catholic News Agency, 6 January 2015
Such will be possible if legislation at the international level is marked by respect for the dignity of the human person, beginning with the centrality of the right to life and to freedom of religion.
Address to the UN High-Level Meeting on the Rule of Law, 24 September 2012, reported by Catholic News (VIS), 26 September 2012
The erosion of freedom of conscience also witnesses to a form of pessimism with regard to the capacity of the human conscience to recognize the good and the true, to the advantage of positive law alone, which tends to monopolize the determination of morality. It is also the Church’s role to remind people that every person, no matter what his beliefs, has, by means of his conscience, the natural capacity to distinguish good from evil and that he should act accordingly. Therein lies the source of his true freedom.
Interview with Vatican Radio, published by ZENIT/EWTN, 16 January 2013
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The Work

Major Works & Initiatives

2012

Address to the UN High-Level Meeting on the Rule of Law, New York

As Secretary for Relations with States, he led Holy See delegations at the UN General Assembly and the OSCE, including this address arguing that the juridical order must be solidly based on the dignity and nature of humanity — the natural law.

2013

Interview on freedom of conscience and the Church's institutional autonomy

Vatican Radio interview on the European Court of Human Rights conscience cases and the Holy See's note on the Church's freedom and institutional autonomy, defending conscientious objection and the autonomy of religious communities.

2014

Prefect of the Supreme Tribunal of the Apostolic Signatura

Appointed Prefect of the Supreme Tribunal of the Apostolic Signatura, the Church's highest tribunal, on 8 November 2014; President of the Commission for Lawyers from 28 April 2015.

2025

Protodeacon's announcement of the election of Pope Leo XIV

As cardinal protodeacon, the senior cardinal deacon, he pronounced the Habemus Papam formula from the balcony of Saint Peter's Basilica announcing Cardinal Robert Francis Prevost as Pope Leo XIV, following the 2025 conclave in which he voted as an elector.

For the Record

Controversies

On the record

No significant public controversies reported.

Domus Dei · Collegium Cardinalium · Last reviewed 20 October 2026
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