Stemming from leadership theory, this paper aims to investigate the relationship between Transformational leadership and organizational innovation. Relying on a sample of 103..Egyptian corporations,  our findings suggest that transformational leadership affect organizational innovation , top management support mediates the relationship between transformational leadership and innovation input , resource supply mediates the relationship between transformational leadership and innovation outcomes, both of top management support and resource supply mediate the relationship between transformational leadership and innovation process .The discussion section offers implications for transformational leadership and innovation literature , as well as practical implications.. This study contributes to the research stream of transformational leadership, providing insights also to innovationand innovation climate literatureresearch.