Advocacy is vital to case management practice. It is a primary professional role of case managers functioning in various care settings and across the continuum of care. Acquiring knowledge, skills, and competence in what advocacy is and how to enact its related behaviors is essential for success of case managers and for achieving desired outcomes for both the clients and healthcare agencies alike. This article describes the use of advocacy in the field of case management and highlights several practical strategies for case managers to apply in their daily practice.