The Bezirk Lienz (Italian: Distretto di Lienz) is an administrative district (Bezirk) in Tyrol, Austria. It is the only district in East Tyrol. The district borders the Pinzgau (Salzburg) in the north, the districts Spittal an der Drau and Hermagor (both Carinthia) in the east, Veneto (Italy) in the south, and South Tyrol (Italy) in the west.
The area of the district is 2,016.41 square kilometres (778.54 sq mi) with a population of 48,833 o January 1, 2019, and population a density of 25 per square kilometre (65/sq mi). The administrative center of the district is Lienz.