Tatabánya (Hungarian: Tatabányai járás; German: Kreis Totiserkolonie) is a district in south-eastern part of Komárom-Esztergom County.

The district is located in the Central Transdanubia Statistical Region.

(ordered by population, as of 1 January 2013)[1] The bolded municipality is the city.

Besides the Hungarian majority, the main minorities are the German (approx.

7,000 persons in Tatabánya District did not declare their ethnic group at the 2011 census.