Karl Eduard Zetzsche (March 11, 1830, in Altenberg – April 18, 1894, in Dresden) was a German mathematician and physicist.
He studied in Dresden and Vienna, and in 1856 entered the Austrian telegraph service. In 1858, he became a teacher in the industrial high school at Chemnitz and, in 1876, a professor of telegraphy in the Polytechnic Institute at Dresden. In 1880, he was appointed telegraph engineer in the Imperial Post Office at Berlin. In 1887, he retired from public service.
This article incorporates text from a publication now in the public domain: Gilman, D. C.; Peck, H. T.; Colby, F. M., eds. (1905). "Zetzsche, Karl Eduard". New International Encyclopedia (1st ed.). New York: Dodd, Mead.
Wilhelm Heß (1900), " Zetzsche, Karl Eduard", Allgemeine Deutsche Biographie (in German), vol. 45, Leipzig: Duncker & Humblot, pp. 119–121