<p>In the capital market many research have been done to determine relationship between different financial variables and corporate dividend policy, but has been less attention to the ownership structure in the Iran as one of the influencing factors on dividend policy. The present study is investigate the shareholders composition effect on amount of cash dividend in Tehran Stock Exchange listed companies with exerting control free per share cash flow and the size of company in a 5-year period (2006-2010). In this regard, proposed four hypotheses. In sampling method (systematic elimination) 146 firms were selected as sample. In order to test the hypothesis were used the correlation and regression analysis. The results indicated existence of meaningful relationship between 5 percent ownership among largest shareholders, legal and real shareholders and percentage ownership of the board members with cash dividends in Tehran Stock Exchange listed companies.</p><br />