The aim of this paper is to investigate the role of trust in leaders as a mediator between servant leadership style and organizational commitment in the context of market research firms in Malaysia. A total of 177 respondents participated in this survey. A correlation analysis was conducted and the result shows that all variables are significantly correlated at p < 0.01. In addition, results from the regression analyses indicate that trust in leaders serves as a partial mediator between servant leadership and organizational commitment. Servant leadership and trust in leaders are crucial to maintain higher organizational commitment among employees. Thus, leaders in organization should adopt servant leadership style to gain employees' trust and subsequently employees are more willing to participate and support in organizational activities.