Dunaújváros is an industrial city in Fejér County, Central Hungary. It is a city with county rights. Situated 70 kilometres south of Budapest on the Danube, the city is best known for its steelworks, which is the largest in the country. It was built in the 1950s on the site of the former village of Dunapentele and was originally named Sztálinváros, before acquiring its current name in 1961.

Fejér is an administrative county in central Hungary. It lies on the west bank of the river Danube and nearly touches the eastern shore of Lake Balaton. It shares borders with the Hungarian counties Veszprém, Komárom-Esztergom, Pest, Bács-Kiskun, Tolna and Somogy. The capital of Fejér county is Székesfehérvár.