The Bezirk Dornbirn is an administrative district (Bezirk) in Vorarlberg, Austria.

The area of the district is 172.7 km2, the population 82,721 (January 1, 2012), which makes a population density of 479 persons per km2.

The administrative center of the district is Dornbirn.

The district consists of three municipalities, two of which (Dornbirn and Hohenems) are towns, the third (Lustenau) being the largest market town in Austria.

(population numbers January 1, 2012)