Alvin E. Roth is an economist and professor known for his work in market design, game theory, and experimental economics. He is a Nobel laureate, awarded the 2012 Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel for his contributions to the theory and practice of matching markets. Roth has conducted research on kidney exchange programs, school choice mechanisms, and online marketplaces, developing algorithms that improve the efficiency and fairness of real-world markets. He is the author of *Who Gets What and Why: The New Economics of Matchmaking and Market Design*, which explores the principles behind allocation in diverse markets. Roth has taught at Harvard University and Stanford University and continues to influence economic policy and institutional design through research and consulting.