Tatsuhiko Yamamoto (born 1976) is a Japanese scholar of constitutional law. He is a professor at Keio University Law School, deputy director of the Keio University Global Research Institute, and co-director of the university’s X Dignity Center. His research examines constitutional law, privacy, artificial intelligence, and the legal governance of digital society. In his principal edited work, “AI to Kenpo” (“AI and the Constitution”), Yamamoto and his collaborators analyze how AI-driven classification, evaluation, and behavioral influence affect constitutional protections such as equality, freedom of expression, privacy, and due process.