Katkai is a village in Vilnius District Municipality, in Vilnius County, Lithuania. Katkai lies at 175 m above sea level. It has 31 inhabitants (2021). The nearest city is Vilnius, 13.3 km to the northwest. Near the border: Belarus, 19 km. Among the landmarks around are Vilnius Cathedral (14.0 km), National Museum of Lithuania (14.1 km) and Lithuanian National Museum of Art (13.4 km). Among the natural features are Aukštojas Hill (17.6 km) and Kruopinė Hill (8.3 km).