Artificial Intelligence (AI) is widely used across various industries to enhance efficiency, optimize decision-making, and create innovative solutions and it is now transforming the field of investment decision-making. As companies and investors place a greater emphasis on ethical and sustainable practices, sustainable finance-which incorporates environmental, social, and governance (ESG) factors into financial activities - is gaining global traction. Artificial Intelligence (AI) is becoming a vital instrument in the sustainable finance, because of its ability to analyse enormous volumes of data and spot patterns that are beyond human comprehension. This research paper examines the use of artificial intelligence (AI) tools like predictive analytics, machine learning, and natural language processing,in the financial decision-making. AI can quickly evaluate ESG aspects, predict long-term sustainability risks, and pinpoint high-impact investment opportunities that are in line with sustainability objectives by automating data gathering and analysis. Furthermore, AI-driven insights promote more ethical and knowledgeable financial decision-making by helping investors better manage risks related to social inequity, resource depletion, and climate change. Even though artificial intelligence (AI) has many benefits for sustainable finance, there are drawbacks as well, including data biases, opaque algorithms, and ethical issues. The article concludes that, artificial intelligence helps in creating more precise, effective, and socially conscious financial strategies.Artificial Intelligence (AI) is becoming increasingly important in sustainable finance decision-making due to its ability to handle complex, large-scale data, identify patterns, and optimize decision-making processes in ways that can advance sustainability goals. However, to fully realise AIs potential in forming a sustainable future for global finance, careful governance and ethical concerns are indispensable.