Dr Brendon Dellar is a Clinical Psychologist and Adjunct Associate Professor with the Clinical Psychology programme at Curtin University (School of Population Health), an appointment he has held since 2014. He is a Fellow of the College of Clinical Psychologists of the Australian Psychological Society (FCCLP) and a Board Approved Supervisor under the AHPRA Clinical Endorsement (Registrar) Program.

He is the Founder and a Managing Director of Cygnet Clinic, one of the most predominant psychology practices in Western Australia, with clinics in Midland and Fremantle providing integrated psychology, psychiatry and pain medicine services. Cygnet as an established multidisciplinary team with Consultant Psychiatrist Dr Amit Dahiya and Pain Medicine Specialist Dr Ravi Agrawal, drawing on an integrated model of care for complex trauma, mood and chronic pain presentations.

Dr Dellar completed his tertiary training at Curtin University, comprising a Bachelor of Science in Psychology, a Postgraduate Diploma in Psychology (with Distinction), a Master of Psychology (Clinical and Health) and a PhD. His clinical practice concentrates on trauma and its common comorbidities (including alcohol and other drug dependency, grief and depression), alongside obsessive-compulsive disorder, borderline personality disorder and the dissociative presentations associated with post-traumatic stress. He works within cognitive behavioural, schema therapy, imagery rescripting and advanced motivational enhancement frameworks.

He maintains an active medico-legal practice, undertaking psychological assessment together with workers' compensation and Criminal Injuries Compensation evaluations, and is a member of the Australian and New Zealand Association of Psychiatry, Psychology and Law (ANZAPPL). He has served as Consultant Psychologist to the Australian Football League (since 2021) and previously held the position of WA & SA service co-ordinator with the AFL, and as a member of the St John Wellbeing and Support Expert Advisory Group (since 2018). In 2024 he co-authored, with Dr Robert Tym, Soldiers with Stammering Vision: Solving Many Problems of PTSD for Everyday People and Experts Alike (Replete Press).