Rūdelė is a village in Kalvarija Municipality, in Marijampolė County, Lithuania. Rūdelė lies at 114 m above sea level. It has 52 inhabitants (2021). The nearest city is Marijampolė, 24 km to the north. Near the border: Poland, 9.5 km. Among the landmarks around are Sejny Synagogue (26 km), Puńsk synagogue (14.3 km) and Church of the Assumption in Puńsk (14.5 km).