Michael W. Sonnenfeldt (born October 7, 1955) is an American entrepreneur, philanthropist, and political activist. Currently, he is the founder and chairman of TIGER 21, chairman of MUUS & Company and MUUS Climate Partners, Co-Chairman, Climate Pathways Project at the Sloan School, MIT, Board member Center for New American Security (CNAS), President, Goldman-Sonnenfeldt Foundation and author of “Think Bigger and 39 Other Lessons from Successful Entrepreneurs" published by Bloomberg/Wiley in 2017.
