This article contains a list of Encyclicals of Pope Pius X. Pope Pius X issued 17 papal encyclicals during his reign as Pope:
{, class="wikitable"
! No. !! Title (Latin) !! Title (English language, English translation) !! Subject !! Date !! Text
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, 1. , , ''E supremi'' , , , , On the Restoration of All things in Christ , , 4 October 1903 ,
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, 2. , , ''Ad diem illum, Ad diem illum laetissimum'' , , , , On the Immaculate Conception , , 2 February 1904 ,
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, 3. , , ''Iucunda sane'' , , , , On Pope Pope Gregory I, Gregory the Great , , 12 March 1904 ,
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, 4. , , ''Acerbo nimis'' , , , , On Teaching Christian Doctrine , , 15 April 1905 ,
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, 5. , , ''Il fermo proposito'' , , , , On Catholic Action in Italy , , 11 June 1905 ,
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, 6. , , ''Vehementer Nos'' , , , , On 1905 French law on the separation of Church and State, the French Law of Separation , , 11 February 1906 ,
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, 7. , , ''Tribus circiter'' , , , , On the Mariavites: Mystic Priests of Poland , , 5 April 1906 ,
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, 8. , , ''Pieni l'animo'' , , , , On the Clergy in Italy , , 28 July 1906 ,
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, 9. , , ''Gravissimo officii munere'' , , , , On French Associations of Worship , , 10 August 1906 ,
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, 10. , , ''Une fois encore'' , , , , On the Separation of Church and State , , 6 January 1907 ,
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, 11. , , ''Pascendi dominici gregis'' , , , , On the Doctrine of the Modernism, Modernists , , 8 September 1907 ,
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, 12. , , ''Communium rerum'' , , , , On Saint Anselm of Aosta, St. Anselm of Aosta , , 21 April 1909 ,
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, 13. , , ''Editae saepe'' , , , , On Saint Charles Borromeo, St. Charles Borromeo , , 26 May 1910 ,
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, 14. , , ''Notre charge apostolique'' , , “Our Apostolic Mandate” , , On socialist doctrines of the Le Sillon, Sillon movement , , 15 August 1910 ,
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, 15. , , ''Iamdudum'' , , , , On the Law of Separation in Portugal , , 24 May 1911 ,
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, 16. , , ''Lacrimabili statu'' , , , , On the Indians of South America , , 7 June 1912 ,
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, 17. , , ''Singulari quadam'' , , , , On Labour Organisations , , 24 September 1912 ,
Lists of papal encyclicals, Pius 10
Pope Pius X