P aul-Heinz Wesjohann is a German billionaire who, along with his late brother, Erich, built the PHW Group into a massive and dominant player in the European poultry industry. The family's business was founded by their father as a small animal feed company. The two brothers took over and transformed it into a vertically integrated poultry giant. The company's most well-known brand is Wiesenhof, which is the leading brand of poultry in Germany.

The PHW Group has a massive 'farm-to-fork' operation, with interests in animal feed, hatcheries, and processing plants. The family's wealth is derived from their ownership of this massive, privately held agribusiness empire. Paul-Heinz and his family have been the longtime leaders of the company, guiding its strategy and its successful expansion. He is a major and influential figure in the German and European agricultural industries.