Barysiai Airfield, designated ICAO code EYSB, is a military airfield located near Šiauliai in northern Lithuania. It has historically served as a significant Soviet-era military installation and remains associated with Lithuanian Air Force operations and NATO activities in the Baltic region. The airfield is notably used in connection with the NATO Baltic Air Policing mission, which operates out of the broader Šiauliai area, including Šiauliai International Airport (EYSA). Barysiai itself is primarily a military facility and does not serve scheduled commercial passenger traffic.