Jász

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

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