Johannes Teyssen is a German businessperson who has been the head of 10 different companies. Presently, he holds the position of Chairman-Management Board at E.ON SE and Chairman-Supervisory Board for innogy SE (a subsidiary of E.ON SE). Dr. Teyssen is also on the board of BP Plc and Nord Stream AG and Member-Presidential Board at Bundesverband der Deutschen Industrie e.V.

Johannes Teyssen previously occupied the position of Member-Management Board at Hastra AG, Chairman at E.ON US Investments Corp., Chairman-Supervisory Board for E.ON Energy Trading AG, Chairman-Supervisory Board of E.ON Hanse AG, Chairman-Supervisory Board at E.ON Energy Trading SE, Chairman-Management Board at E.ON Energie AG, Chairman-Management Board at Avacon AG, Member-Supervisory Board at E.ON Ruhrgas AG, Head-Legal Affairs at PreussenElektra AG and President of Union of Electricity Industry.

Johannes Teyssen received a graduate degree from the University of Freiburg and an undergraduate degree and a graduate degree from the University of Gottingen.