Martin Benno Schmidt (23 August 1863 – 27 November 1949) was a German pathologist born in Leipzig.
He spent several years as an assistant at the University of Strasbourg, where he worked under Friedrich Daniel von Recklinghausen (1833-1910). In 1906 he became a professor of pathology at the medical academy in Düsseldorf, and afterwards worked as a pathologist in Zurich and Marburg. In 1913 he succeeded Richard Kretz (1865-1920) as professor of pathology at the University of Würzburg, a position he maintained until his retirement in 1934.
Schmidt specialized in pathological investigations of bone disorders such as rickets, osteogenesis imperfecta,[1] and osteomalacia. He is remembered for his description of autoimmune polyendocrine syndrome, type II, a disease characterized by autoimmune activity against more than one endocrine gland. This condition is sometimes referred to as "Schmidt's syndrome".[2] He also performed important studies involving iron metabolism.