Eugen Enderlen (21 January 1863 – 7 June 1940) was a German physician and surgeon born in Salzburg, Austria.
In 1888 he received his medical doctorate from the University of Munich, where he worked as an assistant to Hans Ernst August Buchner and Otto Bollinger.
In 1908 he relocated to the University Hospital in Würzburg, and during World War I served as a general physician.
Enderlen specialized in numerous surgical procedures, including surgery of the nerves and blood vessels, as well as operations for ulcers and gallstone disorders.
He developed innovative techniques in esophageal surgery, and with physiologist Ludolf von Krehl, performed stellate ganglion blocks and denervation operations on the heart.