Euphronios (yo͞ofrō`nēəs), c.520–470 B.C., Greek potter and painter. He spent his early career as a painter, working mainly in the red-figure style. In his later years, he was known primarily as a potter. The vessels attributed to him as a painter include a vase depicting the struggle of Heracles with Antaeus (c.510–500 B.C.) and a kylix depicting a horseman within it and Heracles' battle with the mythical Gorgon outside it.