 Cities are facing major challenges, such as urban population growth, degradation of natural resources, environmental crises, climate, health, and economic shocks, and social inequality. If we don't transform our cities now, these problems will only get worse in the future. FAO launched the Green Cities Initiative to improve the well-being of urban dwellers and the resilience of cities in the face of these global crises. The initiative encourages cities to integrate urban and peri-urban agriculture, forestry, and food systems transformation into their planning, policies, and action. The Green Cities Initiative supports local governments and the inclusive participation of all relevant stakeholders so that cities are better connected with their peripheries and natural environments. All types of cities can join the Green Cities Initiative and implement effective actions according to their needs and objectives. Join the Green Cities Initiative to build a green and resilient future, leaving no one behind.