In 2003, the American Counseling Association (ACA) adopted the ACA Advocacy Competencies (J. A. Lewis, M. S. Arnold, R. House, & R. L. Toporek, 2002) to provide guidance to counselors and acknowledge advocacy as an ethical aspect of service to clients. This article provides a foundation for this special section by sharing a historical perspective on recent pivotal advocacy movements within the profession. An overview of the development and content of the Advocacy Competencies is provided followed by a case example to assist counselors in understanding and enhancing their application.