David Millar Clark, CBE, FBA, FMedSci, FAcSS (born 20 August 1954) is a British psychologist.
He then returned to teach at Oxford University where he became a professor, then returned to the IOP where in 2000 he became head of psychology and founded the centre for anxiety disorders and trauma at the IOP and associated Maudsley Hospital along with fellow Oxford psychologists trauma-specialist Anke Ehlers and OCD-specialist Paul Salkovskis.
He has been a Professor of Psychology at the University of Oxford since 2011 and is also National Clinical Adviser at the Department of Health.
[2] Clark was instrumental, with the economist Richard Layard, in the development and implementation of the Improving Access to Psychological Therapies programme from 2003.
He was appointed Commander of the Order of the British Empire (CBE) in the 2013 New Year Honours for services to mental health.