Gyöngyös is a town in Heves county in Hungary, 80 km (50 mi) east of Budapest. Situated at the foot of the Sár-hegy and Mátra mountains, it is the home of numerous food production plants, including milk production and sausage factories. It is also the home of many vineyards on the slopes of the Sárhegy.

Heves county lies in northern Hungary, between the right bank of the river Tisza and the Mátra and Bükk mountains. It shares borders with the Hungarian counties Pest, Nógrád, Borsod-Abaúj-Zemplén and Jász-Nagykun-Szolnok. Eger is the county seat.