Portrait of Pope Leo III

Pope Leo III

Pope of the Catholic Church from 795 to 816

Lived
750–816
Country
Papal States

Updated September 2026

About Pope Leo III

Pope Leo III was bishop of Rome and leader of the Papal States from 26 December 795 to his death on 12 June 816.

Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.

Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers. Last updated September 2026.