Šilai is a village in Jonava District Municipality, in Kaunas County, Lithuania. Šilai lies at 81 m above sea level. It has 304 inhabitants (2021). The nearest city is Jonava, 6.6 km to the southwest. Among the landmarks around are Ninth Fort (35 km), M. K. Čiurlionis National Art Museum (37 km) and Jonava railway bridge (6.0 km). Among the natural features are Vainiai poplar (2.7 km).

Also written Šilai (Jonava).