Wilhelm Ludwig (20 October 1901, in Asch, Austria-Hungary (now Aš, Czech Republic) – 23 January 1959, in Leipzig, East Germany) was a German zoologist and geneticist.
His research interests were population genetics, inbreeding, paternity diagnosis, evolution, biometrics, sensory physiology (optimal Horopter), sex ratio in humans and animals and the right-left problem.
He studied zoology, chemistry and mathematics at the universities of Leipzig, Kiel, and Freiburg with professor Johannes Meisenheimer.
At the suggestion of the biologist and geneticist Richard Goldschmidt, his book, "right-left problem in animals and humans," an issue that continued to deal with him arose.
In the same year, he became a professor at the Zoological Institute in Mainz, headed by Wolfgang von Buddenbrock, whose collaborator had already been to Halle.