Karl Moritz Schumann (17 June 1851 – 22 March 1904) was a German botanist. Schumann was born in Görlitz. He was curator of the Botanisches Museum in Berlin-Dahlem from 1880 until 1894. He also served as the first chairman of the Deutsche Kakteen-Gesellschaft (German Cactus Society) which he founded on 6 November 1892. He died in Berlin. Karl Moritz Schumann participated as a collaborator in Die Natürlichen Pflanzenfamilien by Adolf Engler and K. A. E. Prantl and in Flora Brasiliensis by Carl Friedrich Philipp von Martius.