Given the importance of American Association for Marriage and Family Therapy (AAMFT) Approved Supervisors to education, training, and regulation of marital and family therapists (MFTs), this study used 2001 national survey data to compare master's prepared AAMFT Approved Supervisors with those who possessed a doctorate. There has been a consistent increase from 1976 when 33% of Approved Supervisors were master's practitioners until today where they comprise approximately half of the Approved Supervisors respondents. We found modest differences with some overlap between master's and doctoral supervisors. More doctoral AAMFT Approved Supervisors provided supervision in private practice settings, were involved in professional organizations, had a pluralistic theoretical orientation, and were involved in ongoing MFT scholarship.KEY WORDS: Approved Supervisors; marriage and family therapists; family therapy supervision; family therapy education and training.The American Association for Marriage and Family Therapy's (AAMFT) Approved Supervision program, a major factor in the credentialing of clinicians providing services to families, couples, and individuals since the 1960s, has been undergoing change over the decades. The three national survey studies of supervisors carrying the Robert E. Lee, PhD, is Professor of Marriage and Family Therapy,