Karin Erdmann (born 1948) is a German mathematician specializing in the areas of algebra known as representation theory (especially modular representation theory) and homological algebra (especially Hochschild cohomology).
She is notable for her work in modular representation theory which has been cited over 1500 times according to the Mathematical Reviews.
Her nephew Martin Erdmann is professor for experimental particle physics at the RWTH Aachen University.
She attended the Justus-Liebig-Universität Gießen and wrote her Ph.D. thesis on "2-Hauptblöcke von Gruppen mit Dieder-Gruppen als 2-Sylow-Gruppen" (Principal 2-blocks of groups with dihedral Sylow 2-subgroups) in 1976 under the direction of Gerhard O.
Erdmann was the inaugural Emmy Noether Lecturer of the German Mathematical Society in 2008.