The main purpose of this study is to compare and differentiate the leadership styles of men and women managers and to test the accuracy of sex-roles stereotyping, In this study, the leadership styles of women and men branch managers in public and private commercial banking sector have been identified and compared by using a questionnaire. In addition, the tendency of displaying the effective leadership styles of women and men banking sector managers has been analysed. The effect of some factors which are thought to have some impacts on leadership styles have also been investigated. The study concluded, among others that there is not a significant difference between managerial styles of men and women managers.