Nuncio is an ecclesiastical diplomatic title, derived from the ancient Latin word, Nuntius, meaning "envoy." This article addresses this title as well as derived similar titles, all within the structure of the Roman Catholic Church. A Papal Nuncio is the equivalent of Ambassadors of other countries, although in Catholic countries, the nuncio often ranks above Ambassadors in diplomatic protocol.

Read more about Nuncio:  Terminology and History, List of Diplomatic Posts of The Holy See