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Jürgen Karl-Josef Hescheler (born 2 May 1959) is a German physician and stem cell researcher. He is director to the Institute for Neurophysiology and a university professor at the University of Cologne. Hescheler has studied the biology of embryonic stem cells since the late 80's, and his publications have garnered an average total of over 1,000 citations per year since the late 2010's. He became the first researcher to accomplish an electrophysiological characterization of stem cells and was also among the first scientists in Germany obtaining permission to do research on human embryonic stem cells. He is the founder and Chairman of the German Society for Stem Cell Research (GSZ).