This study aims to determine the influence of leadership on commitment in implementing quality assurance policies, the influence of quality culture on commitment in implementing quality assurance policies, the effect of job satisfaction on commitment in implementing quality assurance policies, the influence of leadership and quality culture on job satisfaction and commitment in implementing quality assurance policies at Universitas Negeri Medan, Indonesia. The research sample is 202 lecturers. The research instrument used was a questionnaire, and the data was analyzed using Path Analysis. From the result of the study, it was found that there was a significant influence of leadership variables on job satisfaction. Quality culture has a positive effect on job satisfaction. Leadership has a positive effect on commitment to implementing quality assurance policies. Quality culture has a positive effect on commitment to implementing quality assurance policies, and job satisfaction also has a positive effect on commitment to implementing quality assurance policies. Taken together, leadership, quality culture, and job satisfaction positively affect commitment to implementing quality assurance policies.