Johannes Martin "Joe" Klotsche (November 28, 1907 – 4 February 1995), was an American professor of history and the first chancellor of the University of Wisconsin–Milwaukee, serving as the chief executive of the school and its predecessors from 1946 to 1973.
It was renamed Wisconsin State College-Milwaukee in 1951, and Klotsche's title was changed to Provost).
Klotsche's administration oversaw UWM's growth from a small teacher's college to a major university.
Klotsche displayed a continued interest in foreign policy by directing events for the Institute of World Affairs in Geneva; Paris; and Salisbury, Connecticut; and by helping the U.S. Office of Education organize a school-community project in Germany.
After his retirement from teaching, Klotsche and his wife, Roberta Roberts Klotsche, lived for some time in Arizona; after her death, he returned to Wisconsin, living in Oostburg in Sheboygan County.