Background: To shape priorities for health and health care outcomes, it is essential for nurse leaders to be influential. The application and impact of influence are readily recognized, but not its characteristics. Purpose: The purpose of this project was to conduct a concept analysis of influence relative to nurse leaders. Methods: The Walker and Avant method of concept analysis was utilized. Findings: Attributes of influence include advocacy, communications skills, competency, confidence, credibility, and engagement. Antecedents of influence are authority, collaboration, integrity, and mentorship. Consequences of influence are action, change, commitment, compliance, decision-making, motivation, and resistance. Discussion: By drawing upon a systematic understanding of the concept of influence, nurse leaders are urged to develop and leverage the attributes of influence to drive and achieve collective good for the future of health and health care in society. Cite this article: Sundean, L.J., Han, H.P., Waddell, A., & Adams, J.M. (2021, May/June). A concept analysis of influence for nurse leaders. Nurs Outlook, 69(3), 286-292. https://doi.org/10.1016/j.outlook.2020.11.006.