Spirakiai is a village in Joniškis District Municipality, in Šiauliai County, Lithuania. Spirakiai lies at 43 m above sea level. The nearest city is Šiauliai, 47 km to the southwest. Among the landmarks around are Rundāle Palace (33 km), Mežmuiža Church in Augstkalne (13.9 km) and Hill of Crosses (36 km). Among the natural features are Vaineikiai tuberous oak (3.4 km).