Modern Era · 256th pope in the Annuario Pontificio list
Leo XIII
- Pontificate
- 20/02/1878 – 20/07/1903
- Birth name
- Gioacchino Vincenzo Raffaele Luigi Pecci
- Nationality
- Italy (Papal States)
- Born – died
- 1810 – 1903
- Predecessor
- Pius IX
- Successor
- Pius X
Important events
- Founded modern Catholic social teaching
Main teachings
- Workers' rights and a just wage
- Renewal of the study of Thomas Aquinas
- Encouragement of biblical studies
Councils and documents
- Aeterni Patris (1879)
- Rerum Novarum (1891)
- Providentissimus Deus (1893)
Interesting facts
- Pope until the age of 93
List: Wikidata (CC0), ordinals per the Annuario Pontificio, retrieved 2026-10-01. Antipopes are not included. For the current pope, see vatican.va.