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Dominique François Joseph Mamberti (French: [dɔminik mɑ̃bɛʁti]; born 7 March 1952) is a French Catholic prelate who has served as Prefect of the Apostolic Signatura since 2014. He was made a cardinal by Pope Francis in 2015. In 2025, serving as the cardinal protodeacon, he announced the election of Pope Leo XIV from the balcony of Saint Peter's Basilica following the 2025 papal conclave.
| Diplomatic posts | ||
| Preceded byMarco Dino Brogi OFM | Apostolic Delegate to Somalia 18 May 2002 – 15 January 2004 | Succeeded byRamiro Moliner Inglés |
| Apostolic Nuncio to Sudan 18 May 2002 – 15 September 2006 | Succeeded byLeo Boccardi | |
| Preceded bySilvano Maria Tomasi | Apostolic Nuncio to Eritrea 19 February 2004 – 15 September 2006 | |
| Political offices | ||
| Preceded byGiovanni Lajolo | Secretary for Relations with States of the Holy See 15 September 2006 – 8 November 2014 | Succeeded byPaul Richard Gallagher |
| Catholic Church titles | ||
| New titleTitular see established | — TITULAR — Archbishop of Sagone 18 May 2002 – 14 February 2015 | Succeeded byPaolo Rocco Gualtieri |
| Preceded byRaymond Leo Burke | Prefect of the Supreme Tribunal of the Apostolic Signatura 8 November 2014 – present | Incumbent |
| Preceded byFiorenzo Angelini | Cardinal-Deacon of Santo Spirito in Sassia 14 February 2015 – present | |
| Preceded byRenato Martino | Cardinal Protodeacon 28 October 2024 – present | |