Cardinal electors for the 1914 conclave

File:Benedictus XV, by Nicola Perscheid, 1915 (retouched).jpg by the 1914 conclave on 3 September.]]

The papal conclave of 1914 was convened to elect a pope, the leader of the Catholic Church, to succeed Pope Pius X following his death on 20 August 1914.

Of the 65 members of the College of Cardinals at the time of Pius X's death, 57 participated in the subsequent conclave. William Henry O'Connell and James Gibbons arrived too late from the United States,{{cite book|last1=Chadwick|first1=Owen|title=A History of the Popes, 1830-1914|date=1998|publisher=Ocford University Press|page=336|isbn=978-0-19-926286-1|url=https://books.google.com/books?id=xtbLJZOKxx8C&pg=PA336|accessdate=13 November 2017}} as did Louis-Nazaire Bégin from Quebec.{{cite book | access-date = 7 March 2021 | url = https://books.google.com/books?id=e5jyyCMnRTIC&pg=PA60 | page = 60 | title =Benedict XV: The Unknown Pope and the Pursuit of Peace | first = John | last = Pollard | date = 2005 | publisher = Bloomsbury Academic |isbn = 9780860124085}} Sebastiano Martinelli, Franziskus von Sales Bauer, Kolos Ferenc Vaszary, Giuseppe Antonio Ermenegildo Prisco, and François-Virgile Dubillard were too ill or too frail.{{cite book| title = Papal Elections in the Age of Transition, 1878-1922 | url = https://books.google.com/books?id=t9QxJMdp6FMC&pg=PA103 | accessdate = 15 November 2017 |first= Francis A. | last = Burkle-Young | page= 103 |publisher= Lexington Books | date= 2000|isbn = 9780739101148}}

The cardinal electors entered the Sistine Chapel to begin the conclave on 31 August 1914. On 3 September, after ten ballots over four days, they elected Cardinal Giacomo della Chiesa, the archbishop of Bologna, who took the papal name Benedict XV.