SDSN’s National and Regional Networks promote the localization and implementation of the SDGs, develop long-term transformation pathways, provide education for sustainable development, and launch Solutions Initiatives to address challenges. Each network focuses on distinct projects and priorities in line with their local contexts and challenges. The 2020 Networks in Action report features the innovative solutions and partnerships being led by the SDSN’s networks. This edition highlights the flagship initiatives and global collaboration from our 37 national and regional networks and 5 thematic networks, and includes a special introduction on how the SDSN networks are working together to respond to the COVID-19 pandemic and achieve the SDGs.