Arjen Hoekstra (1967) is Professor in Water Management at the University of Twente, the Netherlands, and Visiting Professor at the Lee Kuan Yew School of Public Policy at the National University of Singapore. Hoekstra pioneered in quantifying the water volumes virtually embedded in trade, thus showing the relevance of a global perspective on water use and scarcity. As creator of the water footprint concept, Hoekstra introduced supply-chain thinking in water management. With the development of Water Footprint Assessment he laid the foundation of a new interdisciplinary research field, addressing the relations between water management, consumption and trade. Hoekstra is founder of the Water Footprint Network, was the organization's first Science Director and is now Chair of its Supervisory Board. Hoekstra's scientific publications cover a wide range of topics related to water, food, energy and trade and include a large number of highly cited articles and book chapters. He also developed various educational tools, including the River Basin Game and the Globalization of Water Role Play.