title: Hallmann
text: # Hallmann
  
  Hallmann is a German surname. Notable people with the surname include:
  
  * Christian Hallmann (born 1981), Dutch-German Geochemist
  * Johannes Hallmann (born 1964), German agricultural scientist
  * Klemens Hallmann (born 1976), Austrian entrepreneur and investor
  * Piotr Hallmann (born 1987), Polish mixed martial artist
  