Tiszaújváros (Hungarian: Tiszaújvárosi járás) is a district in south-eastern part of Borsod-Abaúj-Zemplén County. Tiszaújváros is also the name of the town where the district seat is found. The district is located in the Northern Hungary Statistical Region.

Tiszaújváros District borders with Szerencs District to the northeast, Tiszavasvári District (Szabolcs-Szatmár-Bereg County) and Hajdúnánás District (Hajdú-Bihar County) to the east, Mezőcsát District to the south, Miskolc District to the northwest. The number of the inhabited places in Tiszaújváros District is 16.

The district has 1 town and 15 villages. (ordered by population, as of 1 January 2012)

The bolded municipality is the city.

In 2011, it had a population of 31,842 and the population density was 128/km.

Year	County population	Change
2011	31,842	n/a

Besides the Hungarian majority, the main minorities are the Roma (approx. 2,000) and German (150).

Total population (2011 census): 31,842
Ethnic groups (2011 census): Identified themselves: 29,552 persons:

• Hungarians: 27,032 (91.47%)
• Gypsies: 1,955 (6.62%)
• Others and indefinable: 565 (1.91%)

Approx. 2,000 persons in Tiszaújváros District did not declare their ethnic group at the 2011 census.

Religious adherence in the county according to 2011 census:

• Catholic – 10,549 (Roman Catholic – 9,443; Greek Catholic – 1,102);
• Reformed – 5,746;
• Evangelical – 55;
• other religions – 295;
• Non-religious – 5,479;
• Atheism – 338;
• Undeclared – 9,380.

• 
  Tiszaújváros, the district seat
• 
  Conflux of the Tisza and Sajó river near Tiszaújváros
• 
  Dőry Mansion in Girincs
• 
  Memorial park near Muhi

• List of cities and towns of Hungary

• Postal codes of the Tiszaújváros District

47°56′00″N 21°00′00″E / 47.9333°N 21.0000°E / 47.9333; 21.0000