Depression is a well-known co-morbidity of cancer. A possible intervention for depression is psychological treatment defined as psychotherapy provided by a psychologist. In this narrative review we investigated the effect of psychological treatment on depression for patients with cancer. Six Cochrane reviews of 38 studies investigating psychological or psychosocial interventions were reviewed. One of the 38 studies could not be assessed. None of the included studies investigated psychological treatment for patients who were diagnosed with depression or included because of depression symptoms.