Janet Treasure (born 1952) is a British psychiatrist, who specialises in research and treatment of eating disorders.

[1] Janet became a Medical Research Council (MRC) training fellow at the Institute of Psychiatry, King's College London, in 1984.

[2] She was awarded a professorship in Psychiatry at KCL in 2000, which she continues to hold today, alongside her position as director of the Eating Disorder Unit in SLaM.

Her current research unit is investigating and developing all aspects of eating disorders treatment, biology, and clinical problems.

Treasure has also been very involved in cognitive behavioural therapy (CBT) and motivational interviewing treatment trials for patients with type 1 diabetes.