This paper examines the role of Central Bank Digital Currencies (CBDCs) in advancing United Nations (UN) Sustainable Development Goals (SDGs). Today, more than 60 central banks are piloting CBDCs. For underserved areas, CBDCs hold potential by providing secure and affordable access to financial services. Despite this potential, CBDC implementation faces challenges. Only three countries—Nigeria, the Bahamas, and Jamaica—have launched CBDCs. Low public awareness, cybersecurity worries, and competition from private digital currencies have slowed adoption. Pilot programs in Ecuador and Senegal failed due to technical problems, low participation, and public doubt. These cases show that public trust and supportive policies are crucial. Our findings indicate that CBDCs could aid the UN SDGs when backed by strong policies, public involvement, and suitable infrastructure. Nations wanting to use CBDCs for sustainable development must overcome these hurdles to succeed.