Jason F. Brennan (born 1979) is an American philosopher and business professor. He is currently the Robert J. and Elizabeth Flanagan Family Professor of Strategy, Economics, Ethics, and Public Policy at the McDonough School of Business.Brennan writes about democratic theory, the ethics of voting, competence and power, freedom, and the moral foundations of commercial society. His work focuses on the intersection of normative political philosophy and the empirical social sciences, especially on questions about voter behavior, pathologies of democracy, and the consequences of freedom. He argues that most citizens have a moral obligation not to vote.