The study of policy entrepreneurs as agents of change has developed greatly in recent years, supported by increasingly more sophisticated theoretical and empirical research. In this article, we first consider how the concept of the policy entrepreneur can be integrated into broader theories of the policy process, with particular focus on the compatibility of the concept with the narrative policy framework. We then propose that further empirical research on policy entrepreneurs focus on five tasks:(1) Delimiting policy entrepreneurs as a distinct class of actor; (2) investigating contextual factors that encourage the emergence of policy entrepreneurs; (3) further specifying the strategies policy entrepreneurs deploy; (4) improving the measurement of the impact policy entrepreneurs have in the policy process; and (5) identifying when policy entrepreneurs prompt widescale change. New theoretical and empirical contributions along these lines could do much to advance our understanding of agency and structure in contemporary politics.