Johann Adam Schmidt (12 October 1759 – 19 February 1809) was a German-Austrian surgeon and ophthalmologist who was a native of Aub, a town near Würzburg.

He began his medical career as an army Unterchirurg (under surgeon), and later studied ophthalmology under Joseph Barth (1745–1818) in Vienna.

[1] In 1802, together with Karl Gustav Himly (1772–1837) he founded Ophthalmologische Bibliothek, which was the first German magazine of ophthalmic medicine.

In 1811, his book Lehrbuch der Materia Medica was published posthumously, which was a work on medicinal plants and their properties.

[3] Beethoven dedicated the Trio for piano, violin, and cello in E-flat major Op.