Beržai is a village in Jonava District Municipality, in Kaunas County, Lithuania. Beržai lies at 71 m above sea level. It has 26 inhabitants (2021). The nearest city is Jonava, 5.3 km to the southwest. Among the landmarks around are Ninth Fort (35 km), M. K. Čiurlionis National Art Museum (36 km) and Jonava railway bridge (4.5 km). Among the natural features are Vainiai poplar (3.6 km).