The study investigates the impact of board of directors’ composition on the financial performance of the Saudi listed firms, using models that aim to represent the effect of different board of directors’ composition. This paper is focused on dependent, independent and control variables that aim to test further areas that was limited to some previous researchers. It was assumed that there is a negative relationship between the board size and firm performance, as well as female board directors and firm recruiting. However, it was found that both variables have no relationship with firm performance. It was predicted that there is a positive relationship between chair independence and firm performance, as well as a negative relationship in regard to chair independence. Thus, it was established that there is a positive relationship between the non-executive directors and firm performance.