Ernst Soner (Nuremberg, December 1572 – Altdorf bei Nürnberg, 28 September 1612) was a German doctor and herbalist.
Son of a businessman, he studied medicine at Altdorf University from 1589 to 1592 with Nicolaus Taurellus and Philipp Scherbe (1555–1605).
In Basel he graduated in medicine and in 1602 settled in Nuremberg to practice.
In 1605 he succeed Philipp Scherbe and in 1607/1608 was made rector of the Altdorfer Akademie.
Among his pupils were Johann Crell (from 1620 rector of the Racovian Academy), Michael Gittich, Martin Ruarus and Jonas Schlichting, influential proponents of Polish Unitarianism and the early Enlightenment.