Takanori Ida (born 1965) is a Japanese economist and Professor at the Graduate School of Economics, Kyoto University. His research spans behavioral economics, industrial organization, public economics, and energy economics, with a particular focus on applying economic analysis to public policy in fields such as electricity, telecommunications, healthcare, and environmental policy. Widely recognized as one of Japan's leading scholars of behavioral economics, he has played a central role in introducing concepts such as nudges and behavioral decision-making to both academic and public audiences. His best-known book, *The Economics of the Mind: Understanding Human Behavior Through Behavioral Economics*, offers an accessible introduction to behavioral economics, using everyday examples to explain how people make decisions and why they often depart from the predictions of traditional economic theory.