IW:LEARN is the Global Environment Facility’s service and support initiative for its International Waters community. It helps strengthen the management of shared water ecosystems by promoting learning, collaboration, knowledge sharing, and capacity development. With more than 25 years of service, the initiative has supported over 500 GEF International Waters projects and curated or developed more than 5,000 knowledge resources.

IW:LEARN offers practical resources, including project portfolio information, manuals, methodologies, publications, scientific assessments, and Strategic Action Programmes. Its capacity-building services include trainings and workshops, peer-to-peer learning, and online courses. Projects can also use twinning to exchange experience, seek partners and expertise through project matchmaking, and receive support to create project websites. Networking activities and events connect stakeholders across regions, while thematic hubs cover areas such as groundwater, marine ecosystems, gender, economic valuation, private sector engagement, and communications. Through these services, tools, and knowledge products, IW:LEARN supports international waters stakeholders in sharing solutions and applying lessons to transboundary water management.