Zindel V. Segal (born 1956 in Lutsk, Ukraine)[1]is a cognitive psychologist, a specialist on depression and one of the founders of Mindfulness-based Cognitive Therapy (MBCT).

A professor of psychology at University of Toronto, Segal combines mindfulness with conventional cognitive behavioral therapy, which teaches patients to develop a different relationship to sadness or unhappiness by observing and without judgment. Presently he is Distinguished Professor of Psychology in Mood Disorders in the Department of Psychology at the University of Toronto Scarborough. He is also the Director of Clinical Training in the Graduate Department of Clinical Psychological Science.