Carl David Stegmann (1751 – 27 May 1826) was a German tenor, harpsichordist, conductor, and composer.
He was born in Staucha near Meissen, the son of Johann Ehrenfried Stegmann and Anna Christiana Bretzner, and married Karoline Johanna Eleanore Linz producing two sons and four daughters. He received his initial musical training from the local organist at Staucha, then studied in Dresden with J.F. Zillich (from 1760), at the Kreuzschule (1766–70) and later under Homilius and the violinist H.F. Weisse. Thereafter he rose rapidly as singer, actor, and harpsichordist; he went to Breslau in 1772 (with the Wäser theatre company), Königsberg in 1773, Heilsberg in 1774 (as court harpsichordist to the Bishop of Ermeland), Danzig in 1775, Königsberg again in 1776 (with the Schuch company) and later appeared in Gotha (at the court theatre). From 1778 to 1783 he made the first of two extended visits to Hamburg, winning particular renown as a harpsichordist. By that time, six of his operas and Singspiels, first produced earlier in Königsberg and Danzig, were attracting performances elsewhere in northern Germany. In 1783 he left Hamburg to join the Grossmann company in Bonn. He then became attached to the court theatre at Mainz in association with which he made highly acclaimed guest appearances in Frankfurt. He sang in the first German-language Don Giovanni (Mainz, 13 Mar 1789), produced or conducted other operas by Mozart, Salieri, Gluck and Gassmann, composed incidental music (e.g. to Bürger's version of Macbeth, 30 Aug 1785) and acted in dramas by Lessing and Schiller.