Aging has emerged as one of the fundamental challenges of recent decades, with prominent thinkers and sociologists warning of the alarming onset of the aging crisis. They predict a significant increase in the number of elderly individuals compared to other age groups in the coming decades. The elderly have different needs and desires during this period compared to their pre-aging years. On the other hand, with the advancement of technology and smart technologies, we witness the introduction of the concept of the smart city and subsequently the sustainable smart city. It is likely that future generations of the elderly will be far more involved with modern technologies. Accordingly, this research seeks to explain the strategies for a sustainable smart age-friendly city in Semnan and to extract the possible commonalities between the concepts of an age-friendly city and a sustainable smart city. This is an applied research study that employs a descriptive-analytical method. For data collection, library research and the study of existing documents were utilized. Furthermore, the MAXQDA software was used to analyze the obtained data. In this process, documents obtained from various sources were entered into the software after an initial evaluation to undergo coding. After the coding process was completed, four factors along with their corresponding sub-criteria were extracted, which represent the common criteria between the two concepts of the age-friendly city and the sustainable smart city. These criteria are: intelligent transportation for the elderly, intelligent health for the elderly, intelligent participation of the elderly, and intelligent infrastructure along with age-friendly spaces. This research concluded that the two concepts of the age-friendly city and the sustainable smart city are not entirely separate; they share commonalities, indicating that these two concepts are complementary. In this research, strategies and policies are proposed for implementation in the city of Semnan.