Master E. S. (c. 1420 – c. 1468; previously known as the Master of 1466) is an unidentified German engraver, goldsmith, and printmaker of the late Gothic period. He was the first major German artist of old master prints and was greatly copied and imitated. The name assigned to him by art historians, Master E. S., is derived from the monogram, E. S., which appears on eighteen of his prints (variants appear on others). The title, Master, is used for unidentified artists who operated independently. He was probably the first printmaker to place his initials on his work.

Remaining signed works by E. S. indicate that he was active in printmaking from 1450 to 1467, the latest date to appear on one of his prints. After this date, he is presumed to have died. He was the most distinguished German engraver before Martin Schongauer.