Michael B. First (born 1956) is an American psychiatrist who focuses on diagnostic criteria for mental disorders. He is Professor of Clinical Psychiatry at Columbia University. First was one of the editors of DSM-IV-TR, the Editor of Text and Criteria for the DSM-IV, and the editor of the Structured Clinical Interview for DSM-IV.[1] He also served as consultant to the World Health Organization for the revision of ICD-11.