The main purpose of this study is to examine the influence of management leadership on performance through the mediating role of firm innovativeness. This study has three main goals: (1) to determine the relationship between management leadership, firm innovativeness and performance; (2) to determine if firm innovativeness plays a mediating role between management leadership and performance and (3) to test a research model explaining the relationships among management leadership, firm innovativeness and performance through empirical examination. For this aim the data collected from firms in the Marmara region in Turkey. Factor analysis is used to validate the measures of variables. A regression analysis is performed to determine whether management leadership is associated with firm innovativeness and performance