The export performance of companies is influenced by various internal and external factors, some of the internal factors, such as knowledge of target markets and presence in international production networks, are among the companies' intellectual capital. The purpose of this research is to investigate the impact of intellectual capital and its components on export and sales of the company. This research is applied in terms of purpose and descriptive in terms of data collection. To estimate the intellectual capital, we used the Value Added Intellectual Coefficient (VAIC) method, and to measure exports, we used the ratio of export to total sales, and we also used multivariate regression analysis to investigate the impact of two variables. The data is for a 5-year period (2015 to 2019) from all the manufacturing companies present in the Tehran Stock Exchange (195 companies) were selected. The results of the hypothesis test indicate a positive relationship between intellectual capital and export as well as sale. Of course, contrary to the initial expectation, there was no evidence of the effectiveness of human and structural capital on the export and total. Also, physical capital, as one of the components of Value Added Intellectual Coefficient calculation, has a positive impact on the export and sales. These results can be indicative of the fact that among the major listed companies of the country, knowledge-oriented components of intellectual capital such as human capital and structural capital have not found their real place in influencing international performance in comparison with physical capital.