Donald John Roberts, a distinguished Canadian-American economist and influential professor at the Stanford Graduate School of Business, passed away on January 23, 2026, at the age of 80. Born in Winnipeg, Manitoba, Canada, Roberts dedicated his life to advancing the fields of organizational economics, strategic management, and game theory. His profound insights and rigorous academic contributions left an indelible mark on economic thought and business education globally.

Roberts began his extensive academic journey by earning his bachelor's degree from the University of Manitoba in 1967, followed by a doctorate in economics from the University of Minnesota in 1972. He commenced his teaching career at Northwestern University's Kellogg School of Management, where he served as a professor from 1971 until 1980. In 1980, he joined the Stanford Graduate School of Business, where he became the John H. and Irene S. Scully Professor of Economics, Strategic Management, and International Business, a position he held with distinction.

Throughout his tenure at Stanford, Professor Roberts was celebrated for his pioneering research and exceptional teaching. He co-authored the groundbreaking textbook "Economics, Organization and Management" in 1992, which was among the first to integrate modern theories of incentives and contracting into managerial economics. His later work, "The Modern Firm: Organizational Design for Performance and Growth," published in 2004, was lauded by The Economist as the year's best business book. His research significantly contributed to understanding industrial competition, firm strategy, and organizational design, often employing game theory and lattice theory.

Roberts's contributions were widely recognized through numerous accolades. He received the Excellence in Teaching Award from the Stanford GSB's Sloan Master's Program in 2002 and the prestigious Robert T. Davis Faculty Lifetime Achievement Award from the school in 2005. He was elected a Fellow of the American Academy of Arts and Sciences in 2005 and was awarded an honorary Doctor of Laws degree from the University of Winnipeg in 2007. His legacy endures through his extensive publications, the numerous doctoral students he mentored who went on to faculty roles at leading institutions, and the lasting impact of his theories on economic and management practices.