Pope Leo XIII
Documents 88
52 encyclicals · 14 apostolic letters · 5 bulls · 5 apostolic constitutions · 4 letters · 3 briefs · 2 decrees · 2 motu proprio · 1 constitution
- 4 March 1878 Bull Ex supremo Apostolatus apice — Restoring the Scottish Episcopal Hierarchy
- 21 April 1878 Encyclical Inscrutabili Dei consilio — On the evils of society
- 28 December 1878 Encyclical Quod apostolici muneris — On socialism
- 4 August 1879 Encyclical Aeterni Patris — On the Restoration of Christian Philosophy
- 10 February 1880 Encyclical Arcanum — On Christian Marriage
- 30 September 1880 Encyclical Grande munus — On Saints Cyril and Methodius
- 3 December 1880 Encyclical Sancta Dei civitas — On mission societies
- 29 June 1881 Encyclical Diuturnum illud — On the Origin of Civil Power
- 3 August 1881 Encyclical Licet multa — On Catholics in Belgium
- 5 August 1881 Apostolic letter Ex hac augusta — Establishing the ecclesiastical hierarchy in Bosnia and Herzegovina
- 15 February 1882 Encyclical Etsi nos — On conditions in Italy
- 12 May 1882 Apostolic letter Singulare praesidium — On the reform of the Ruthenian Basilian Order in Galicia
- 24 May 1882 Constitution Praedecessores Nostri — On the election of the Roman Pontiff
- 17 September 1882 Encyclical Auspicato concessum — On St. Francis of Assisi
- 8 December 1882 Encyclical Cum multa — On conditions in Spain
- 1 March 1883 Brief Benigna hominum — Establishing the Armenian College in Rome
- 30 May 1883 Apostolic letter Misericors Dei Filius — On the Rule of the Third Order of St. Francis
- 1 September 1883 Encyclical Supremi apostolatus officio — On devotion of the Rosary
- 8 February 1884 Encyclical Nobilissima Gallorum gens — To the Bishops of France on the Church in France
- 20 April 1884 Encyclical Humanum genus — On Freemasonry
- 30 August 1884 Encyclical Superiore anno — On the recitation of the Rosary
- 10 November 1884 Apostolic letter Materna Ecclesiae caritas — On the restoration of the Archiepiscopal See of Carthage
- 1 November 1885 Encyclical Immortale Dei — On the Christian Constitution of States
- 27 November 1885 Encyclical Spectata fides — On Christian education
- 22 December 1885 Encyclical Quod auctoritate — Proclaiming an extraordinary jubilee
- 6 January 1886 Encyclical Iampridem — On Catholicism in Germany
- 22 August 1886 Encyclical Quod multum — On the liberty of the Church
- 1 September 1886 Apostolic letter Humanae salutis Auctor — On the establishment of the episcopal hierarchy in the East Indies
- 14 September 1886 Encyclical Pergrata — On the Church in Portugal
- 20 September 1887 Encyclical Vi è ben noto — On the Rosary and public life
- 22 December 1887 Encyclical Officio sanctissimo — On the Church in Bavaria
- 1 April 1888 Letter Quod anniversarius — Appointing a Day of Suffrage for the Souls in Purgatory
- 5 May 1888 Letter In plurimis — On the abolition of slavery
- 20 June 1888 Encyclical Libertas praestantissimum — On the Nature of Human Liberty
- 24 June 1888 Encyclical Saepe nos — On boycotting in Ireland
- 17 July 1888 Apostolic letter Quod singulari Dei concessu — Instituting the Cross 'Pro Ecclesia et Pontifice'
- 7 September 1888 Bull Ad universam catholicam Ecclesiam — Erecting the Diocese of Lugano in Switzerland
- 10 December 1888 Letter Quam aerumnosa — On Italian immigrants
- 21 December 1888 Encyclical Etsi cunctas — On the Church in Ireland
- 25 December 1888 Encyclical Exeunte iam anno — On the right ordering of Christian life
- 2 February 1889 Apostolic constitution Jamdudum — On Laval University at Quebec
- 7 March 1889 Letter Magni nobis — On the Catholic University of America
- 15 August 1889 Encyclical Quamquam pluries — On devotion to St. Joseph
- 10 December 1889 Apostolic letter In magna — On the establishment of the Faculty of Sacred Theology at the Catholic University of Paris
- 20 December 1889 Apostolic letter Eximia sacrarum — On the canonical erection of the Catholic University of Toulouse
- 10 January 1890 Encyclical Sapientiae christianae — On the Chief Duties of Christians as Citizens
- 15 October 1890 Encyclical Dall'alto dell'Apostolico Seggio — On Freemasonry in Italy
- 20 November 1890 Encyclical Catholicae Ecclesiae — On slavery in the missions
- 16 December 1890 Brief Sempiternam dominici gregis — On the Pontifical University of Comillas
- 3 March 1891 Encyclical In ipso — On episcopal reunions in Austria
- 15 May 1891 Encyclical Rerum novarum — On the Condition of the Working Classes
- 23 June 1891 Apostolic letter Illud in primis — On the reorganization of the hierarchy in Mexico
- 12 September 1891 Encyclical Pastoralis officii — On the morality of duelling
- 22 September 1891 Encyclical Octobri mense — On the Rosary
- 15 February 1892 Decree Consensus mutus — Of the Holy Office on carnal copulation following betrothal
- 16 February 1892 Encyclical Au milieu des sollicitudes — On the Church and State in France
- 27 April 1892 Bull Ad universas orbis Ecclesias — On the erection of the Diocese of Niterói
- 14 June 1892 Brief Neminem fugit — On the institution of the universal Association of the Holy Family
- 16 July 1892 Encyclical Quarto abeunte saeculo — On the Columbus quadricentennial
- 8 September 1892 Encyclical Magnae Dei Matris — On the Rosary
- 8 December 1892 Encyclical Custodi di quella fede — On Freemasonry
- 24 June 1893 Encyclical Ad extremas Orientis oras — On the establishment of clerical colleges in the East Indies
- 12 July 1893 Apostolic letter Summum semper — Confirming the Benedictine Confederation
- 2 September 1893 Encyclical Constanti Hungarorum — On the Church in Hungary
- 8 September 1893 Encyclical Laetitiae sanctae — On the Rosary
- 18 November 1893 Encyclical Providentissimus Deus — On the Study of Holy Scripture
- 20 June 1894 Apostolic letter Praeclara gratulationis — On Christian Unity to All Princes and Peoples
- 2 July 1894 Encyclical Litteras a vobis — On the clergy in Brazil
- 8 September 1894 Encyclical Jucunda semper — On the Rosary and the Mediation of Mary
- 24 December 1894 Encyclical Christi nomen — On the propagation of the faith and the Eastern Churches
- 5 September 1895 Encyclical Adiutricem populi — On the Marian Rosary
- 19 March 1896 Motu proprio Auspicia rerum — On promoting Catholic unity among the Eastern Churches
- 29 June 1896 Encyclical Satis cognitum — On the Unity of the Church
- 13 September 1896 Apostolic letter Apostolicae curae — On the Nullity of Anglican Orders
- 25 January 1897 Apostolic constitution Officiorum ac munerum — On the Prohibition and Censorship of Books
- 9 May 1897 Encyclical Divinum illud munus — On the Holy Spirit
- 12 September 1897 Encyclical Augustissimae Virginis — On the Rosary
- 4 October 1897 Apostolic constitution Felicitate quadam — On restoring the unity of the Order of Friars Minor
- 4 May 1898 Bull Cum ex hac Beati Petri Cathedra — Erecting the Diocese of Pembroke from the Apostolic Vicariate of Pontiac
- 22 January 1899 Apostolic letter Testem benevolentiae — To Cardinal Gibbons on Americanism
- 2 July 1900 Decree Postremis hisce temporibus — Erecting the Diocese of Alagoas in Brazil
- 8 December 1900 Apostolic constitution Conditae a Christo — On religious institutes with simple vows
- 18 January 1901 Encyclical Graves de communi re — On Christian Democracy
- 20 February 1901 Bull Supremum Catholicum Ecclesiam — Erecting the Diocese of Piauí (Teresina)
- 1 August 1901 Apostolic letter Slavorum gentem — Extinguishing the Chapter of the Collegiate Church of St. Jerome of the Illyrians and erecting the Collegium Hieronymianum in Rome
- 28 May 1902 Encyclical Mirae caritatis — On the Holy Eucharist
- 25 November 1902 Motu proprio Litteras ante annos duos — Establishing the Council for the Work of the Preservation of the Faith
- 20 February 1903 Apostolic constitution Actum praeclare — Erecting the dioceses of Pinar del Río and Cienfuegos in Cuba