| Dunaújváros District | |
| Native Name: | Dunaújvárosi járás |
| Native Name Lang: | hu |
| Settlement Type: | Districts of Hungary |
| Image Blank Emblem: | Dunaújváros.svg |
| Blank Emblem Type: | Coat of arms |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Name1: | Fejér |
| Seat Type: | District seat |
| Seat: | Dunaújváros |
| Area Total Km2: | 650.05 |
| Area Rank: | 3rd in Fejér |
| Population As Of: | 2011 census |
| Population Total: | 94,414 |
| Population Rank: | 2nd in Fejér |
| Population Density Km2: | 145 |
Dunaújváros (hu|Dunaújvárosi járás) is a district in south-eastern part of Fejér County. Dunaújváros is also the name of the town where the district seat is found. The district is located in the Central Transdanubia Statistical Region.
Dunaújváros District borders with Martonvásár District to the northeast, Ráckeve District (Pest County) and Kunszentmiklós District (Bács-Kiskun County) to the east, Paks District (Tolna County) to the south, Sárbogárd District, Székesfehérvár District and Gárdony District to the west. The number of the inhabited places in Dunaújváros District is 16.
The district has 1 urban county, 3 towns, 3 large villages and 9 villages.(ordered by population, as of 1 January 2012)[1] The bolded municipalities are cities, italics municipalities are large villages.