Hennemann is a surname. Notable people with the surname include: Charles Hennemann (1866–1938), American track and field athlete. Frank H. Hennemann (born 1978) is a German entomologist. Franziskus Hennemann (1882–1951), German Roman Catholic missionary and Titular Bishop in South Africa. Marcelo Hennemann (born 1962), Brazilian tennis player. See also. Henneman https://en.wikipedia.org/wiki/Hennemann