Kenneth J. Zucker is a certified child psychologist in the province of Ontario, who received his Ph.D. from the University of Toronto in 1982. He is currently a Professor in the Department of Psychiatry, University of Toronto and in private practice.

Dr. Zucker has worked primarily with children and adolescents with gender dysphoria for over 40 years. He was the Chair of the 2013 DSM-5 Workgroup on Sexual and Gender Identity Disorders, has been the Editor of Archives of Sexual Behavior since 2002, and is a Past President of the International Academy of Sex Research. He has published around 300 peer-reviewed journal papers and book chapters.