The Berlin Foundry Cup is a red-figure kylix from the early 5th century BC. It is the name vase of the Attic vase painter known conventionally as the Foundry Painter. Its most striking feature is the exterior depiction of activities in an Athenian bronze workshop or foundry. It is an important source on ancient Greek metal-working technology.

In the pottery of ancient Greece, a kylix is the most common type of cup in the period, usually associated with the drinking of wine. The cup often consists of a rounded base and a thin stem under a basin. The cup is accompanied by two handles on opposite sides.