Joniškis is a village in Ignalina District Municipality, in Utena County, Lithuania. Joniškis lies at 162 m above sea level. The nearest city is Utena, 34 km to the west. Among the landmarks around are Lithuanian Museum of Ancient Beekeeping (12.6 km), Church of St. Joseph, Palūšė (14.3 km) and Church of the Visitation, Vidiškės (10.5 km). Among the natural features are Ladakalnis (13.2 km).