George Selgin is an American economist known for his work in monetary theory and policy. He is a prominent advocate for free banking and has written extensively on the benefits of a competitive banking system. Selgin's research often focuses on the role of money in the economy and how monetary policy can impact economic stability. He is a senior fellow at the Cato Institute, a think tank that promotes free-market policies. Selgin has authored several books and articles, contributing to discussions on topics such as inflation, deflation, and the historical development of banking systems. His ideas challenge conventional views on central banking and monetary regulation.