Bessel van der Kolk (born 1943) is a psychiatrist, author, researcher and educator based in Boston, USA. Since the 1970s his research has been in the area of post-traumatic stress.
He is the author of The New York Times best seller, The Body Keeps the Score.
Van der Kolk served as a past president for the International Society for Traumatic stress Studies and former co-director of the National Child Traumatic Stress Network.
He is a professor of Psychiatry at Boston University School of Medicine and president of the Trauma Research Foundation in Brookline, Massachusetts.
Van der Kolk has published over 150 peer reviewed scientific articles.
His books include Post-traumatic Stress Disorder (1984), Psychological Trauma (1987), Traumatic Stress (1996, with Alexander C. McFarlane and Lars Weisæth) and The Body Keeps the Score (2014).