Christopher J. Lennings is a Senior Lecturer in Psychology in the School of Behavioural and Community Health /Sciences at the University of Sydney. He is a clinical and forensic psychologist who has specialised in working with children, adolescents and their families affected by substance abuse and involved with the juvenile justice and child protection systems.

Dr Lennings has published articles, book chapters and produced training resources in the area of counselling and assessment of young people, and in substance abuse treatment, forensic psychology and psychometric assessment. His chief areas of research interest include forensic psychology, the treatment and assessment of substance abuse, violent and sexually violent young offenders, youth suicide, decision making and risk assessment in forensic psychology, and the interface of psychology and the law. He has presented his work nationally and internationally in conferences and workshops.