Green finance and ESG (Environmental, Social, and Governance) investing have gained significant traction in recent years as sustainability becomes a central focus for investors and policymakers. This paper explores the relationship between green finance mechanisms, ESG investment strategies, and their collective influence on corporate valuation. Using recent empirical evidence and case studies, the research investigates how ESG performance metrics correlate with firm value, market perception, and long-term financial performance. The analysis also examines the role of regulatory frameworks, investor behavior, and disclosure practices in shaping ESG outcomes. Findings indicate a positive association between strong ESG performance and enhanced corporate valuation, particularly in sectors with high environmental impact or regulatory scrutiny. This suggests that green finance not only supports sustainable development goals but also creates tangible financial benefits for firms. The study contributes to the evolving discourse on sustainable investing by providing a nuanced understanding of how ESG considerations are reshaping capital markets