Christian Fenger (November 3, 1840 – March 7, 1902) was a Danish-born surgeon, pathologist, and medical instructor. In the later half of his life, he worked at several medical institutions in Chicago, and became one of the most highly regarded surgeons in the United States.Born to a farming family, Fenger studied engineering at the Copenhagen Polytechnic Institute before his father convinced him to pursue a medical degree at the University of Copenhagen.