This study aimed to show the impact of the characteristics of the Board of Directors on the financial performance of Jordanian industrial and service companies listed on the Amman Stock Exchange, through an applied study on companies. To achieve the objectives of the study, the researcher studied all 120 industrial and service companies listed on the Amman Stock Exchange during the period (2013-2015), the impact of the characteristics of the Board of Directors on financial performance was tested through six hypotheses and using multiple regression. The study concluded that there is an impact of the characteristics of the board of directors on financial performance and the presence of modified variables through the presence of a positive impact of the variables of the value of benefits and remuneration for board members and the percentage of family ownership in the board of directors and the type of activity of the company and the study also found a negative impact of the number of meetings of the board of directors and the size of the company on the financial performance of the companies sample study. The study recommended the need to apply the foundations and rules of corporate governance in all companies, increase control over them, enhance the concept of corporate governance, and the need for Jordanian public shareholding companies to separate between the CEO and the Chairman of the Board of Directors according to Corporate Governance Guide.​​