This study purpose was to examine the effect of transformational leadership style, motivation, and organizational culture on organizational commitment mediated by job satisfaction at University of Muhammadiyah Malang. This study collaborates with previous research phenomena of research object. The research object is the University of Muhammadiyah Malang. This research uses a quantitative approach and 114 samples were selected by a purposive sampling method. The results showed that

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... al leadership style had no significant effect on organizational commitment, organizational culture had a significant effect on organizational commitment, job satisfaction had a significant effect on organizational commitment, motivation had a significant effect on organizational commitment, transformational leadership style had no significant effect on job satisfaction, transformational leadership style no significant effect on job satisfaction, organizational culture has a significant effect on job satisfaction, motivation has a significant effect on job satisfaction, and job satisfaction can mediate the effect of organizational culture, and motivation on organizational commitment, while leadership style does not significantly affect organizational commitment through job satisfaction.