Andrew Patrick Arthur Steptoe FAcSS FMedSci MAE (born 24 April 1951) is a British psychologist and epidemiologist and Head of the Department of Behavioural Science and Health at University College London. He is a pioneer in health psychology and behavioural medicine in the UK and internationally, known for his work on psychosocial factors in cardiovascular disease, ageing, and positive wellbeing and health.