Margaret Blair is an economist who focuses on corporate law and finance. She is a Professor of Law (Emerita) and the Milton R. Underwood Chair in Free Enterprise (Emerita) at Vanderbilt University. Her current research focuses on five areas: team production and the role of corporate boards of directors, the legal concept of "personhood," the historical treatment of corporations by the Supreme Court, the role of private-sector governance arrangements in contract enforcement, and the problem of excessive leverage in financial markets.