The Green Climate Fund (GCF) is the world's largest climate fund, established under the UNFCCC to support developing countries in climate change adaptation and mitigation. It offers a range of financing instruments, including grants, concessional debt, guarantees, and equity, to leverage private investment in climate projects. The GCF's target audience includes developing countries, particularly vulnerable societies like Least Developed Countries and Small Island Developing States. Its unique selling proposition is its ability to mobilize large-scale funding for transformative climate projects, fostering partnerships between governments, private investors, and civil society to achieve low-emission and climate-resilient development.