This chapter examines the promising transition toward sustainability facilitated by financial technology (FinTech), which serves to advance the development of a sustainable economy. A sustainable economy emphasizes the importance of societal initiatives and the utilization of technological advancements to promote environmentally responsible economic growth. Green finance plays a pivotal role by deploying innovative FinTech solutions that prioritize environmental, social, and governance (ESG) responsibilities. The chapter highlights the proactive measures taken by the member countries of the Gulf Cooperation Council (GCC) to reform policies and implement regulations for building a more sustainable economy. These nations are leading the way in integrating technological solutions and promoting the growth of non-oil sectors. They recognize the potential benefits of these innovations in enhancing operational efficiency and fostering green growth. This transition presents a valuable opportunity for oil-dependent economies to innovate and evolve, paving the way toward a more sustainable and prosperous future.