Pius XI
pope of the Catholic Church from 1922 to 1939

- Born: 1857-05-31 (Desio) (country: Austria-Hungary; located in the administrative territorial entity: Kingdom of Lombardy–Venetia)
- Died: 1939-02-10 (Vatican City)
- Country of citizenship: Kingdom of Italy (period: 1861-03-17 through 1939-02-10)
- Occupation: Latin Catholic priest (since: 1879-12-20); librarian; mountaineer
- Participant in: 1922 papal conclave
- Position held: Apostolic Nuncio to Poland (of: Poland; since: 1919-06-06); Catholic bishop (since: 1919-10-28); Metropolitan Archbishop of Milan (diocese: Roman Catholic Archdiocese of Milan; period: 1921-06-13 through 1922-02-06; replaced by: Eugenio Tosi; replaces: Andrea Carlo Ferrari); cardinal (since: 1921-06-13); pope (period: 1922-02-06 through 1939-02-10; replaced by: Pius XII; replaces: Benedict XV; series ordinal: 259); titular archbishop (diocese: Adana, Naupactus; since: 1919-07-03, 1921-04-19)
- Educated at: Pontifical Gregorian University; Sapienza University of Rome
- VIAF ID: https://viaf.org/viaf/88598915
- ISNI: https://isni.org/isni/0000000457281210
- WorldCat Identities ID: https://worldcat.org/identities/lccn-n50044410
- Library of Congress authority ID: https://id.loc.gov/authorities/names/n50044410