In the context of escalating climate change impacts, the role of green building technologies in fostering climate-resilient cities has become increasingly crucial. This chapter delves into the multifaceted aspects of green building technologies and their integral contribution to urban sustainability and resilience. It commences with exploring the fundamentals of green building technologies, including tracing their historical evolution, and investigating their core components, such as energy efficiency, waste reduction, indoor environmental quality, and the utilization of sustainable materials. The role of sustainable building materials is examined in terms of their environmental impact and contribution to building performance. The chapter further explores design strategies pivotal for climate resilience, focusing on passive architectural design, green roofing, and the incorporation of green spaces. The chapter concludes with a discussion of the diverse roles of green building technologies in enhancing urban resilience, emphasizing their necessity in the face of climate change.