Eisen (born November 11, 1960) is an American politician.
He is a Senior Fellow in Governance Studies at the Brookings Institution.
He served as White House Special Counsel for Ethics and Government Reform, United States Ambassador to the Czech Republic, and board chair of Citizens for Responsibility and Ethics in Washington (CREW).
He is the author of The Last Palace: Europe's Turbulent Century in Five Lives and One Legendary House (2018).