This study examines the role of bioclimatic architectural design as a key instrument for enhancing climate resilience and energy efficiency in the Republic of Kazakhstan, a country characterized by a continental, cold semi-arid climate and increasing exposure to climate-related risks. The research emphasizes the importance of integrating local climatic conditions, vernacular architectural principles, and passive design strategies into contemporary building practices. A qualitative-descriptive methodology was applied, combining climatic data analysis, policy review, and psychrometric assessment based on ASHRAE Standard 55 to identify adaptive and passive strategies for achieving indoor thermal comfort. The findings indicate that the application of bioclimatic design solutions—such as optimized building orientation, thermal mass utilization, natural ventilation, vegetation integration, and passive solar heating—can reduce building energy consumption by approximately 30–35% and improve thermal regulation by 20–40%. The integration of renewable energy technologies, including solar panels and small-scale wind systems, has the potential to reduce the carbon footprint of buildings by up to 25%. The study also highlights the critical role of urban green infrastructure in mitigating the urban heat island effect and enhancing microclimatic conditions, particularly during periods of extreme heat and drought. In addition to architectural considerations, the research situates bioclimatic design within Kazakhstan’s broader climate policy framework, including national adaptation strategies and long-term carbon neutrality goals. The results demonstrate that bioclimatic architecture can contribute simultaneously to climate change mitigation and adaptation by reducing energy demand, enhancing resilience to extreme weather events, and supporting sustainable urban development. The study concludes that incorporating bioclimatic principles into national building regulations and climate adaptation plans represents a cost-effective and scalable pathway for strengthening climate resilience in Kazakhstan and other regions with similar climatic conditions.