Resource mobilization is a critical element in the success of development initiatives. Particularly at the grassroots level, the need for effective resource mobilization cannot be overstated. Non-governmental organizations (NGOs), faith-based organizations (FBOs), community-based organizations (CBOs), and local governments play pivotal roles in addressing the needs of communities, advocating for sustainable development, and implementing initiatives that enhance the quality of life. However, their impact is often limited by the availability and management of resources. This handbook, Resource Mobilization for Development, is designed to guide these key actors in understanding, securing, and managing the resources required to achieve their goals effectively. By equipping NGOs, FBOs, CBOs, and local governments with the knowledge and tools to effectively mobilize resources, this handbook aims to empower these organizations to drive sustainable development and create lasting change. As they embark on this journey of resource mobilization, they must always remember that the ultimate goal is not just to secure resources, but to utilize them in ways that are efficient, effective, and aligned with the needs and aspirations of the communities they serve.