Lewis William Seidman (April 29, 1921 – May 13, 2009) was an American economist, financial commentator, and former head of the U.S. Federal Deposit Insurance Corporation, best known for his role in helping work to correct the Savings and Loan Crisis in the American financial sector from 1988-1991 as head of the Resolution Trust Corporation. He also worked as an economic adviser during three separate Administrations of United States Presidents: Gerald Ford; Ronald Reagan; and George H.W. Bush. He was lauded by both Republicans and Democrats for his work in cleaning up the frauds of the Savings and Loan disaster, but was pushed out of American government by the George H.W. Bush Administration for disclosing the full extent of the crisis to the United States Congress and taxpayers.