Amidst the growing urgency to confront environmental and social challenges, the financial sector finds itself at a critical juncture. Recognizing the need to address issues such as climate change, social inequality, and sustainable development, financial institutions are increasingly turning to innovative solutions to drive positive change. Central to this evolution is financial technology (FinTech), offering financial institutions the means to champion sustainable banking. This dynamic underscores a compelling opportunity to redefine the industry’s stance on environmental and social stewardship. First, this chapter provides an in-depth exploration of fintech innovations aimed at promoting sustainability within banking institutions. Then, it examines the regulatory and ethical considerations that accompany these innovations. Finally, it discusses the potential benefits and challenges associated with integrating fintech into sustainable banking practices.