Šimkūnai is a village in Joniškis District Municipality, in Šiauliai County, Lithuania. Šimkūnai lies at 78 m above sea level. The nearest city is Šiauliai, 29 km to the southwest. Among the landmarks around are Hill of Crosses (18.6 km), Rundāle Palace (45 km) and Red Synagogue of Joniškis (12.9 km).