Algirdai is a village in Ukmergė District Municipality, in Vilnius County, Lithuania. Algirdai lies at 73 m above sea level. The nearest city is Ukmergė, 9.3 km to the northeast. Among the landmarks around are Siesikai Castle (13.4 km), Church of St. Peter and St. Paul (9.5 km) and Orthodox church of the Resurrection of Jesus Christ in Ukmergė (10.4 km). Among the natural features are Žuvintė spring (4.8 km) and Vepriai oak (6.8 km).