The Niobe fritillary (Argynnis niobe) is a butterfly of the Nymphalidae family. It is common throughout Europe, but absent from Northern Europe, and is also found in Siberia, Russia, Iran, China, and Korea Flight is from May to August, size is 46–60 millimetres (1.8–2.4 in), and is found at altitudes between sea level and 2,400 metres (7,900 ft).