<![CDATA[This study aims to analyze the effect of Servant Leadership and Islamic Organizational Culture on Organizational Citizenship Behavior (OCB) as mediated by Job Satisfaction among administrative staff at Universitas Muhammadiyah Muara Bungo (UMMUBA). This research employed a quantitative approach using a survey method. The population and sample consisted of 60 administrative staff of UMMUBA, determined through a saturated sampling (census) technique. Data were collected using a questionnaire with a 1-5 Likert scale and analyzed using Structural Equation Modeling based on Partial Least Squares (SEM-PLS) with the assistance of SmartPLS software. The results show that Islamic Organizational Culture has a positive and significant effect on OCB, whereas Servant Leadership has no significant effect on OCB. Servant Leadership was found to have a positive and significant effect on Job Satisfaction, while Islamic Organizational Culture had no significant effect on Job Satisfaction. Job Satisfaction was also not proven to significantly affect OCB, nor did it mediate the effect of either Servant Leadership or Islamic Organizational Culture on OCB. The research model explains 29.8 percent of the variance in Job Satisfaction and 46.0 percent of the variance in OCB. These findings indicate that Islamic Organizational Culture is the most dominant direct driver of OCB, while Servant Leadership plays a greater role in shaping job satisfaction than in driving OCB directly or indirectly. This study implies that UMMUBA management should prioritize strengthening Islamic organizational culture while continuing to develop servant leadership practices to enhance job satisfaction and organizational citizenship behavior among its staff.]]>
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