Piyanjali de Zoysa is a Professor in Clinical Psychology at the Faculty of Medicine, University of Colombo. She is a Clinical Psychologist by profession with a Bachelors (Hon) degree in Psychology, a Masters degree in Applied (Clinical) Psychology and a PhD. Her PhD was on child-directed violence.

She co-founded an MPhil in Clinical Psychology degree at the University of Colombo, which is the first training program in professional clinical psychology in the country. She was the founder president of the Sri Lanka Psychological Association. She has held several key positions in national-level organizations including the National Child Protection Authority, National Steering Committee on Child Rights, and the National Mental Health Advisory Council. Her research interests include humanness, culturally- appropriate psychological interventions, child maltreatment, and violence.