Ikujiro Nonaka is a prominent Japanese organizational theorist best known for his work on knowledge management. He co-authored the influential SECI model, which describes how knowledge is created and shared within organizations. His research emphasizes the importance of tacit knowledge, which is personal and context-specific, in driving innovation and competitive advantage. Nonaka has held academic positions at various institutions, including Hitotsubashi University in Japan. He has published numerous articles and books, contributing significantly to the fields of management and organizational studies. His ideas have influenced both scholars and practitioners in understanding how knowledge can be effectively harnessed in business environments.