Margai is a village in Kalvarija Municipality, in Marijampolė County, Lithuania. Margai lies at 126 m above sea level. It has 25 inhabitants (2021). The nearest city is Marijampolė, 17.2 km to the east. Near the border: Poland, 13 km. Among the landmarks around are Vilkaviškis Cathedral (20 km), Beit Midrash Synagogue (10.0 km) and Church of St. Michael the Archangel, Marijampolė (16.8 km).