Mausoleum can be considered outstanding examples of culture, art and architecture. Every memorial work in the current context and historical conditions and the cultural, social, religious, economic and political requirements and requirements of the periods in which it was created is a living and active reality for the social groups and people who created it in their time. This research has been carried out with the aim of extracting and evaluating geometric proportional systems in the contemporary mausoleums of Iran. First, with a systematic review of the proportional extraction systems, and then it deals with the compilation of a conceptual framework. The research method is causal-comparative with a quantitative approach and using descriptive and inferential statistics. The sample size is selected according to the statistical population of 384 people. ORIGINPRO software is used for ease of obtaining results. results show that. At this stage, after extracting various geometric proportions, the selected mausoleums are evaluated. The results show that the greatest impact in the design of these buildings is the use of radical ratios with a value of (1.000) and the least related to Ken and Shako for components with a value of (0.167) for designers and (0.152) for users. In the section of general design, using the Platonic rectangle with a value of (0.914) for designers and (0.846) for spatial users has the greatest contribution in the formation of contemporary mausoleum designs. پرونده مقاله