Jászság ("Jaszygia", Latin: Jazigia)[1] is a historical, ethnographical and geographical region in Hungary.
Jászság is inhabited by the Jassic people, an Iranian ethnic group whose linguistic base is preserved by the Ossetians.
In ancient times, this area was settled by Celts, Dacians, Sarmatians, and Germanic peoples.
At the end of the 9th century, the area was settled by the Hungarians and was subsequently included into the medieval Kingdom of Hungary.
Following the Battle of Mohács (1526) the region was included in the Eastern Hungarian Kingdom and later was annexed by the Ottoman Empire.