This paper explores the growing importance of green bonds and alternative financing models in advancing sustainable regional economic policy. As environmental and climate-related concerns take center stage globally, regions are increasingly seeking innovative financial mechanisms to support green infrastructure, renewable energy, and eco-friendly projects. The study analyzes the structure, benefits, and challenges of green bonds within regional development frameworks and evaluates other emerging financing tools such as climate funds, blended finance, and public-private partnerships. Special emphasis is placed on how these instruments can bridge investment gaps.