Michael M. Adler is an American businessman who had served as the United States ambassador to Belgium.

Adler served as Biden's national finance chair during his 2008 presidential campaign.

[3] In September 2021, President Biden nominated Adler to be the United States Ambassador to Belgium.

On December 18, 2021, his nomination was confirmed in the United States Senate by voice vote.

[7] Adler served as chairman of Mount Sinai Medical Center, where he sits on the board of trustees, president of the Greater Miami Jewish Federation,[8] where he was able to serve as a representative at the Conference of Presidents of Major American Jewish Organizations and as former vice chairman of Florida International University's board of trustees.