Sustainability in architecture, aimed at minimizing environmental impacts, has long been recognized as a significant and influential approach in contemporary design. This approach emphasizes the harmony between buildings and their surrounding environment and contributes to the formation of responsible architecture that is compatible with nature. Within this framework, architects, through understanding the climatic characteristics, site conditions, and cultural context of each region, are able to create spaces that not only respond to environmental requirements but are also aesthetically and culturally valuable, integrating seamlessly into the social fabric. This convergence of sustainability and contextualism in architecture has led to a new perspective in which buildings are no longer merely functional elements, but active components of a dynamic and living ecosystem. Sustainable architecture, through innovative design, efficient energy use, and the application of renewable materials, seeks to create structures that are both environmentally efficient and capable of enhancing the quality of life for users. The research methodology of this study is qualitative and case-based, and data collection is conducted through library-based research. Accordingly, recent national and international scholarly sources related to sustainability in architecture, particularly in cold and mountainous regions, were collected, translated, and analyzed. In this article titled “strategies for achieving sustainability in the architectural design of cold and highland regions”, fundamental concepts of sustainability in architecture are first introduced, followed by an examination of its importance in the design of cold and mountainous regions. Ultimately, the study seeks to answer the question of how sustainable architectural design can be achieved in these climatic zones.