Biržai Airfield (ICAO: EYBI) is a small general aviation facility located near the town of Biržai in northern Lithuania, close to the Latvian border. It serves primarily private, sport, and agricultural aviation activities rather than scheduled commercial passenger services. The airfield is typical of many Soviet-era regional airstrips found across the Baltic states, having seen reduced activity following Lithuanian independence in 1990. It continues to support local aviation clubs and occasional light aircraft operations.