This research paper delves into the synergistic integration of Artificial Intelligence (AI) and Financial Technology (FinTech) to propel Environmental, Social, and Governance (ESG) investments within the framework of Sustainable Finance. Against the backdrop of technological acceleration and heightened global concerns, the study emphasizes the pivotal role of ESG investments in addressing contemporary challenges like climate change and social disparities. It sheds light on the inadequacies of traditional financial systems in meeting the escalating demand for transparent and socially responsible investments. The paper assesses the transformative impact of technological innovations, particularly AI and blockchain, on ESG assessment, emphasizing their role in fostering sustainability within the financial domain. With objectives ranging from legal compliance guidelines to exploring FinTech’s potential in emerging economies, the research provides market insights, including the market capitalization of FinTech companies and key global ESG FinTech deals. Governance and regulatory considerations within the FinTech-Sustainable Finance nexus are explored, emphasizing the evolving regulatory landscape and the necessity for robust internal controls within FinTech entities. A comprehensive literature review offers diverse perspectives on the intricate relationship between FinTech, sustainability, and economic progress. The study concludes by advocating for standardized legal frameworks, collaborative initiatives, and interdisciplinary research to harness AI-enhanced FinTech’s full potential in aligning financial innovation with ESG principles for a more resilient and sustainable global financial ecosystem.