Eisenstadt is a city in Austria, the state capital of Burgenland. It has a population of about 12,000 (2006). In the Habsburg monarchy, Eisenstadt/Kismarton was the seat of the Eszterházy hungarian noble family. The composer Joseph Haydn lived there as Hofkapellmeister under Esterházy patronage.
Eisenstadt lies on a plain leading down to the river Wulka, at the south foot of the mountain range known as the Leithagebirge, about 12 km from the Hungarian border.