Change agents often play significant roles in initiating, managing or implementing change in organizations. Yet these roles are invariably exaggerated or misrepresented by one-dimensional models that ignore the full complexity and scope of change agent roles. Following a review and theoretical clarification of some of the literature and empirical research on change agency, a new fourfold classification of change agents is proposed, covering leadership, management, consultancy, and team models. The four models reaffirm the significance of the multifaceted and complex roles change agents perform in organizational change, while underlining the importance of conceiving change interventions within organizations as processes that need to be coordinated and effectively managed.