Ralf W. Dieter is a businessperson who has been at the head of 9 different companies and presently is Chairman-Management Board & CEO for Dürr AG and Chairman-Supervisory Board at Homag Group AG, Chairman-Supervisory Board at iTAC Software AG, Chairman of Dürr Paintshop Systems Engineering (Shanghai) Co., Ltd., Chairman-Management Board at Dürr Systems GmbH and Chairman-Management Board at Carl Schenck AG (which are all subsidiaries of Dürr AG).

He is also on the board of Schuler AG and Körber AG.

In the past he was Chairman at Dürr Systems, Inc., Chairman-Management Board at Dürr Systems AG and Chief Executive Officer for Carl Zeiss Industrielle Messtechnik GmbH.