Jász may refer to: Jász people Jász language Jász-Nagykun-Szolnok, a county in Hungary Jász-Nagykun-Szolnok (former county), a county in the historical Kingdom of Hungary Jászság (Jász), a historical and geographical region in Hungary Jász, the Hungarian name for Iaz village, Obreja Commune, Caraş-Severin County, Romania