The convergence of financial technology (fintech) and Environmental, Social, and Governance (ESG) principles is revolutionizing sustainable finance. Fintech innovations—such as blockchain, AI, and big data analytics—are enhancing transparency, efficiency, and accountability in ESG investing. These tools enable real-time tracking of sustainability metrics, automate compliance reporting, and empower investors to make more informed, values-driven decisions. Digital platforms also broaden access to green finance, allowing individuals and small enterprises to participate in impact investing and sustainable crowdfunding. Additionally, fintech facilitates the integration of ESG factors into traditional financial products, promoting long-term value creation and risk management. As global demand for ethical investing grows, fintech is becoming a critical enabler of sustainable financial ecosystems. By bridging data gaps and democratizing ESG insights, fintech is not only driving financial inclusion but also accelerating the transition toward a more sustainable and equitable economy. This intersection marks a pivotal shift in the future of finance.