As cities worldwide experience rapid urbanization, the urgency to address sustainability and environmental concerns becomes more pressing. This study delves into the synergy between smart city concepts and green technologies as a promising avenue for achieving urban sustainability. Smart cities utilize advanced technologies and innovative solutions to improve residents' quality of life while minimizing environmental harm. Green technologies are instrumental in optimizing resource usage, curbing carbon emissions, and facilitating the integration of renewable energy in urban settings. By reviewing existing literature and case studies, this article explores the potential advantages, obstacles, and effective approaches linked to incorporating green technologies into smart city initiatives. It also examines the roles of policy frameworks, public-private partnerships, and community involvement in encouraging sustainable practices in urban planning and development. Through showcasing successful instances and identifying essential strategies, this research aims to educate policymakers, urban planners, and stakeholders on the transformative potential of smart cities and green technologies in shaping a more sustainable and resilient urban landscape.