|Prefect of the Congregation for Religious|
Tonti pictured in Lisbon on 30 November 1906.
|Church||Roman Catholic Church|
|Appointed||13 February 1907|
|Term ended||11 December 1918|
|Successor||Raffaele Scapinelli di Leguigno|
|Other posts||Cardinal-Priest of Santi Silvestro e Martino ai Monti (1915-18)|
|Ordination||21 December 1867|
|Consecration||25 July 1892|
by Vincenzo Vannutelli
|Created cardinal||6 December 1915|
by Pope Benedict XV
|Birth name||Giulio Tonti|
|Born||9 December 1844|
Rome, Papal States
|Died||11 December 1918 (aged 74)|
Rome, Kingdom of Italy
|Alma mater||Pontifical Roman Seminary|
|Motto||Iustitiae et pax osculante sunt|
|Reference style||His Eminence|
|Spoken style||Your Eminence|
Giulio Tonti (9 December 1844 - 11 December 1918) was an Italian Cardinal of the Roman Catholic Church who served as Prefect of the Sacred Congregation of Religious from 1917 until his death, and was elevated to the cardinalate in 1915.
Giulio Tonti was born in Rome, and received the Sacrament of Confirmation on 17 August 1856. He studied at the Pontifical Roman Seminary, from where he obtained his doctorates in philosophy, in theology, and in canon and civil law.
Tonti was ordained to the priesthood on 21 December 1867, and then served as professor of theology and vice-rector of the Pontifical Urbanian Athenaeum De Propaganda Fide until 1879. He became an official of the Sacred Congregation of Extraordinary Ecclesiastical Affairs in the Roman Curia before serving as auditor of the nunciature to France (1879-1882) and to Portugal (1882-1892). He was raised to the honorary rank of Privy Chamberlain of His Holiness as well.
On 11 July 1892, Tonti was appointed Apostolic Delegate to Santo Domingo, Haiti, and Venezuela and Titular Archbishop of Samos by Pope Leo XIII. He received his episcopal consecration on the following 25 July from Cardinal Vincenzo Vannutelli, with Bishops Michele dei Baroni Zezza Zaponetta and Augusto Berlucca serving as co-consecrators. He was later named Apostolic Administrator of Port-au-Prince and of Les Gonaïves on 24 February 1893, and Titular Archbishop of Sardes on the following 15 July.
Archbishop Tonti rose to become Archbishop of Port-au-Prince, whilst retaining the administration of the Diocese of Les Gonaïves, on 1 October 1894. He was then appointed Nuncio to Brazil and Titular Archbishop of Ancyra on 23 August 1902, and Nuncio to Portugal on 4 October 1906. On 25 October 1910, Tonti resigned his diplomatic post in Portugal as a result of the country's revolution, and returned to Rome.
Pope Benedict XV created him Cardinal-Priest of Ss. Silvestro e Martino ai Monti in the consistory of 6 December 1915. He was later named Prefect of the Sacred Congregation of Religious on 13 February 1917, also becoming a member of the Council for the Administration of the Wealth of the Apostolic See on 21 May of that same year.
| Apostolic Delegate to Santo Domingo, Haiti, and Venezuela
Francesco Marchetti Selvaggiani
| Archbishop of Port-au-Prince
| Nuncio to Brazil
| Apostolic Nuncio to Portugal
Diomede Falconio, OFM
| Prefect of the Sacred Congregation of Religious
Raffaele Scapinelli di Léguigno