Biržai District Municipality is a Lithuanian municipality, located in northern Lithuania, Aukštaitija ethnographic region, Panevėžys County.

The towns of Biržai and Vabalninkas lie within the district.

About 64% of its land is agricultural, including a number of organic farms.

Portions are protected in Biržai Regional Park and as botanical and geological reserves.

This Lithuanian location article is a stub.