Walid A. Chammah (born April 12, 1954, Lebanon) is a former Morgan Stanley executive. He was Chairman of Morgan Stanley International and served as a member of the Morgan Stanley Management and Operating Committees. In January 2012, the company announced internally that Chammah was retiring and would become a senior advisor to the firm.Between September 2007 and December 2009, Chammah was Co-President of Morgan Stanley, overseeing the Firm's Institutional Securities business and operations.