Pieris krueperi, the Krueper's small white, is a butterfly in the family Pieridae. It is found on the Balkan Peninsula and in Iran, Baluchistan, the Kopet-Dagh and from Asia Minor to Central Asia, as well as in Oman. The habitat consists arid areas with scanty vegetation up to 2,500 metres (8,200 ft) in the mountains. The wingspan is 44–54 millimetres (1.7–2.1 in). Adults are on wing from April to September in two or three generations per year. The larvae feed on Alyssum (including Alyssum montanum) and Aurinia species.