Sustainability in a local context involves not only environmental practices such as energy conservation, but also policy efforts to involve communities, develop organizational capacity, and encourage widespread adoption. Sustainability leadership is the promotion of an array of practices, over time, by a broad array of actors including council members, citizens, state legislators, and others-that is, the type of social change leadership defined by Van Wart in Dynamics of Leadership. However, the key role of public administrators in local sustainability has largely been ignored in the literature. Using a national database from U. S. cities, this study provides an organizational-change explanation of the important subroles of administrators in local sustainability. It finds that administrators can have a substantial function in sustainability leadership by engaging citizens, enhancing technical expertise, mobilizing financial resources, and developing managerial execution capacity for sustainability. Effective administrators help overcome dispersed public perspectives, organizational constraints, and technical challenges in local sustainability, which can result in better organizational performance of sustainability policies.