Karl Eckstein (28 December 1859 in Grünberg, Silesia – 22 April 1939 in Ragusa, Dalmatia) was a German entomologist who specialised in Lepidoptera.
He studied natural sciences at the University of Giessen, receiving his doctorate in 1884 with a thesis on rotatoria.
In 1890 he obtained his habilitation, and in 1900 succeeded Altum as professor of forest zoology at the Academy.
[1] He wrote Die Schmetterlinge Deutschlands mit besonderer Berücksichtigung ihrer Biologie und wirtschaftlichen Bedeutung, which included Die Kleinschmetterlinge Deutschlands (5 volumes, 1913–1933).
This article about a forestry researcher is a stub.