Adolf Loewy (German spelling- Adolf Löwy); (June 29, 1862 - December 26, 1937) was a German physiologist who was a native of Berlin.
He studied medicine in Vienna and Berlin, where in 1885 he received his medical doctorate. Later he was an assistant to Nathan Zuntz (1847-1920) at the Landwirtschaftlichen Hochschule (Agricultural University) in Berlin. In 1900 he became an assistant professor, and in 1921 was a professor and in charge of the Schweizerisches Institut für Hochgebirgsphysiologie und Tuberkuloseforschung (Swiss Institute for Altitude Physiology and Tuberculosis) at Davos. In 1925 he became a member of the German Academy of Sciences Leopoldina.
Loewy did extensive research in the field of altitude physiology. This included studies performed at the Jüdischen Krankenhaus (Jewish Hospital) at Berlin, and at Capanna Regina Margherita, a research station at the top of Monte Rosa, Italy. Here he worked with Dr. Zuntz, and other renowned scientists that included Angelo Mosso (1846-1910) and Arnold Durig (1872-1961).
With Austrian physiologist Hermann von Schrötter (1870-1928) he performed pioneer research in pulmonary hemodynamics. In 1905, through the use of an endobronchial catheter, they were the first to achieve airway separation on a human subject.