OBJECTIVE: The purpose of this study was to identify the mechanisms through which different aspects of leadership affect mental health practitioners attitudes toward supervisory feedback. METHODS: Data were collected from 363 practitioners nested in 68 treatment teams in public-sector mental health organizations. A multilevel path analysis was conducted to examine the associations of transformational leadership (supervisors ability to inspire others to follow a course of action) and leader-member exchange (quality of the supervisor-practitioner relationship) with practitioner attitudes toward feedback. RESULTS: Transformational leadership and leader-member exchange were directly and positively associated with practitioners attitudes toward feedback. Transformational leadership was also indirectly associated with practitioners attitudes toward feedback through the quality of supervisor-practitioner relationships. CONCLUSIONS: Study results contribute to the growing body of evidence suggesting that leaders play a key role in shaping mental health service delivery. Both leadership behavior and high-quality supervisor-practitioner relationships are important in supporting practitioners in delivering evidence-based mental health care. Policymakers, administrators, and researchers should consider an integrative approach when developing leadership training interventions.