Marcus Wallenberg is a Swedish banker and industrialist. He began his career in the New York City office of Citibank in 1980–1982. He has also worked for Deutsche Bank, S. G. Warburg & Co., Citicorp and the SEB Group, where he is now the Vice Chairman. Previously, he served as the President and CEO of Investor from 1999 to 2005, and as Chairman of the International Chamber of Commerce from 2006 to 2008.

Mr. Wallenberg graduated from the Edmund A. Walsh School of Foreign Service at Georgetown University. He served as a lieutenant in the Royal Swedish Naval Academy in 1977.