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.
Elderships.
Biržai District Municipality is divided into 8 elderships:
Structure.
District structure: 
Biggest population (2001): 
References.
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