Nowadays knowledge is considered as a precious and strategic source and also an intangible capital (asset). Social capital is one of the important factors accelerating the transfer and share of know ledge and information in macro and micro level. Therefore, trust -based communications and interactions and norms among people in developing, creating, and applying knowledge have been emphasized. The purpose of this study is investigating the fashion of relationship of the impact of social capital

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... n developing the organizational knowledge management in Telecommunication Company of Kashan and the amount of social capital effect (influence) on knowledge management in organization is tested. 96 subjects (people) from among managers and staffers form the statistical body of this study. From the viewpoint of applied purpose and the manner of (data) collection, this is a geodesic descriptive study and of integrative type. The results of co efficiency of correlation are in line with the hypotheses of the study. So it shows that there is a meaningful relationship between knowledge management and social capital and its different dimensions. But the correlation between different dimensions of knowledge management and those of social capital in this company is not at optimal level. The results show that the presented model in this study is approved.