Onesimos (vase painter)
Onesimos ( fl c. 505–c. 480 BC). Athenian greek vase painter. He specialized in decorating cups, mostly of Type B. His name is known from the signature on a cup (Paris, Louvre, G 105) also signed by EUPHRONIOS as potter. At least 10 other cups painted by him bear Euphronios’ signature, and others have been attributed on the basis of the potting style.