Psychosocial treatments like psychotherapy and group therapy are common for the treatment of depression in the general population. Depression in people with intellectual disability presents challenges, because people with intellectual disability often cannot consent to various treatments, clinicians and family members must be involved and use their best judgment. A selected review was conducted to highlight the progress in psychosocial treatment of depression within the last four decades. The main search terms were intellectual disability (ID), depression, and treatment. Nine articles were chosen; and included cognitive behaviour therapy (CBT), computer-assisted CBT, mindfulness-based cognitive therapy (MBCT), exercise therapy, behaviour activation, self-help intervention, dialectal behaviour therapy (DBT), and psychodynamic/psychoanalytical therapy. There were no articles on mental health nursing. Adaptions included smaller groups (in group intervention), visual material, simplifying of concepts, longer duration/more sessions, more practical help, more repetitions when learning new skills, more guiding, professional caregiver/family involvement, and individual support within group interventions.