Gjon (definite form: Gjoni) is an Albanian male given name, clan, surname and onomastic element.
[4] Both theologists and linguists are unsure about the relationship of the name Gjon to Gjin—the Catholic clergy considers the two to be the same saint, but the Christians of the Central Albanian Shpati region (who are Orthodox)[5] revere Gjin and Gjon as separate saints, while linguists are unsure about the etymology of Gjin and whether or not it shares its origin with Gjon.
[6] In the Middle Ages the name Gjon was very widespread in all Albanian regions.
Until lately it was also prevalent among Arvanites in Greece[7] The name Gjon is also mentioned in the afterword of Gjon Buzuku's 1555 book, Meshari, where the author introduces himself to the reader as "Unë, dom Gjoni, biri i Bdek Buzukut" ("I, don Gjoni, son of Bdek Buzuku").
[14][15] Gjon, due to historic naming of places after the saint, became an element in Albanian toponyms, contributing to the formation of placenames such Shijon, Shinjan, Gjonm and Gjorm, the difference between the latter two demonstrating Tosk rhoticism.