The Stockholm International Water Institute (SIWI) is a Stockholm-based policy institute that generates knowledge and informs decision-making towards water wise policy. Founded in 1991, SIWI performs research, builds institutional capacity and provides advisory services in five thematic areas: water governance, transboundary water management, climate change and water, the water-energy-food nexus, and water economics. SIWI also organises the annual World Water Week in Stockholm and hosts the Stockholm Water Prize, the Stockholm Junior Water Prize and the Stockholm Industry Water Award, and hosts several flagship programmes, including the UNDP Water Governance Facility at SIWI. SIWI employs 80 staff with a wide- range of professional experience that enables it to form knowledgeable multi-disciplinary teams that are able to address complex, cross-cutting challenges faced by clients and partners from government and business around the world. Through applied research and policy consultation, capacity-building in individuals and institutions, strategic communication to influence private and public sectors, and linking key actors across sectors, SIWI stimulates the development of innovative policies and scientifically based solutions to water-related challenges. As the organizer of the World Water Week in Stockholm, SIWI has an extensive network and a large annual forum to support policy dialogue and the dissemination of project results to the international water community. SIWI was recently appointed as one of five supporting partners to the newly formed Heads of State Panel on Water, a global undertaking aimed at mobilizing support for implementing the water-related Sustainable Development Goals.