<p>This study examines the interplay between transformational leadership, process management, and productivity within the Tanzania Zambia Railway Authority (TAZARA). While existing research largely emphasizes the direct impact of transformational leadership on organizational performance, this study introduces process management as a mediating factor, providing a more nuanced perspective on how leadership influences productivity. Using a quantitative research design, data were collected from 157 managers and analyzed using Jamovi for regression and mediation analysis. The results indicate that transformational leadership significantly increases productivity, with process management serving as a critical mediator. Specifically, transformational leadership increases productivity by motivating employees and fostering innovation, while process management streamlines operations and improves operational efficiency, effectively linking leadership practices to measurable productivity outcomes. These findings contribute to leadership theory and offer practical implications for organizations seeking to improve productivity through the strategic integration of leadership and process management. Organizations should train leaders in transformational practices while concurrently optimizing workflows to maximize productivity gains. The study underscores the need for a holistic approach that leverages both transformational leadership and effective process management to ensure long-term organizational success.</p>