Madagascar participates in the GEF-8 Sustainable Cities Integrated Program (SCIP) through the coastal city of Toamasina, advancing an integrated and climate-resilient approach to urban development. As a nation renowned for its extraordinary biodiversity yet highly vulnerable to cyclones, flooding, and climate-related shocks, Madagascar faces mounting pressures on its urban systems. Through GEF-8 SCIP and the GPSC Global Knowledge Platform, Toamasina is strengthening urban planning, piloting circular economy solutions, and expanding nature-based measures to create cleaner, healthier, and more resilient neighborhoods. The program supports smart, data-driven approaches to managing waste, improving public services, and enhancing the city’s capacity to adapt to extreme weather events. Madagascar’s engagement offers important lessons for the global GEF network on how biodiversity-rich, climate-vulnerable countries can integrate nature and resilience into fast-growing urban areas.