Sara Castro-Hallgren

Sara Castro-Hallgren is Senior Manager for International Policy and Processes at SIWI. Her work connects water and sustainable development with international policy processes and multilateral cooperation.

She brings 17 years of UN experience, working with more than 50 Member States across Asia, Africa, and Latin America and the Caribbean. Her expertise spans policy reform, research, and technical cooperation, with a focus on evidence-based policymaking, resource efficiency, and sustainable consumption and production. She also chairs the Water for Climate Pavilion Secretariat and leads SIWI’s work on Water in a Changing Climate.

Sara holds a master’s degree in Sustainability and Environmental Policy from Harvard University, a degree in International Development from Erasmus University Rotterdam, and an undergraduate degree in Economics from George Washington University.