Karl Gussow (also: Carl Gussow, 25 February 1843, Havelberg – 27 March 1907, Pasing) was a German painter and university professor.
Gussow worked in Italy and Weimar. In the early 1870s, he taught at the Academy of Fine Arts, Karlsruhe, from 1876 to 1881 at the Prussian Academy of Arts in Berlin, and from 1883 in Munich.
In style, he was a Realist. Anton von Werner, the Director of the Berlin Academy, said that "the exact reproduction of nature" was Gussow's ideal. He used specially designed brushes that enabled him to create more complex glazes. That type of brush is now known as the "Gussow-Pinsel".