Björn Klas Otto Rosengren is a Swedish businessperson who has been at the head of 7 different companies and presently occupies the position of President & Chief Executive Officer at Sandvik Hyperion AB and Chief Executive Officer of ABB Ltd.

Mr. Rosengren previously held the position of President, Chief Executive Officer & Director at Sandvik AB, President & Chief Executive Officer of Wärtsilä Oyj Abp, SEVP, President-Construction & Mining Technique at Atlas Copco AB President for Atlas Copco Craelius AB and President for Atlas Copco Rock Drills AB (both are subsidiaries of Atlas Copco AB), General Manager for Nordhydraulic AB, Marketing Manager at ESAB AB and Marketing Manager at ESAB AG.

Mr. Rosengren received a graduate degree from Chalmers University of Technology.