Berberis, commonly known as barberry, is a large genus of deciduous and evergreen shrubs from 1–5 m (3.3–16.4 ft) tall, found throughout temperate and subtropical regions of the world (apart from Australia). The best-known Berberis species is the European barberry, Berberis vulgaris, which is common in Europe, North Africa, the Middle East, and central Asia, and has been widely introduced in North America. Its leaves are small oval, 2–5 centimetres (0.79–1.97 in) long and 1–2 centimetres (0.39–0.79 in) broad, with a serrated margin; they are borne in clusters of 2–5 together, subtended by a three-branched spine 3–8 mm long. The flowers are yellow, 4–6 millimetres (0.16–0.24 in) across, produced on 3–6 centimetres (1.2–2.4 in) long panicles in late spring. The fruit is an oblong red berry 7–10 millimetres (0.28–0.39 in) long and 3–5 millimetres (0.12–0.20 in) broad, ripening in late summer or autumn; they are edible but sour. The berries are edible and rich in vitamin C, though with a very sharp flavor; the thorny shrubs make harvesting them difficult, so in most places, they are not widely consumed. They are an important food for many small birds, which disperse the seeds in their droppings.

In Europe, the berries have been traditionally used as an ingredient in making jam. The berries are high in pectin which makes the jam congeal as it cools after having been boiled. In southwestern Asia, especially Iran, the berries are used for cooking, as well as for jam-making. In Iran, barberries are commonly used as a currant in rice pilaf.