This article contributes to our understanding of public service motivation and leadership by investigating ways in which organizational leaders can reinforce and even augment the potential effects of public service motivation on employees’ attraction to the organization’s mission (mission valence). The results contribute to two research questions. First, the findings provide new evidence on the sources of public service motivation. The authors find that transformational leadership is an organizational factor associated with higher public service motivation. Second, the article examines the relationship between transformational leadership and mission valence. The authors find that transformational leadership has an important indirect effect on mission valence through its influence on clarifying organizational goals and fostering public service motivation.