Objectives: The Convention on the Rights of Persons with Disabilities (CRPD) was adopted at the United Nations Assembly in 2006. The main aim of the convention is to ensure equal rights for people with disabilities including the expression of people's own "will and preferences" concerning health treatment. Article 12 demands the respect of a person's "rights, will and preferences" (CRPD) and suggests supported decision making (SDM) when possible. The aim of this review was to gather information regarding the SDM implementation from a clinical perspective for people with mental health disorders.Methods: A systematic literature search was performed on electronic databases MEDLINE, PsycARTICLES, and PsycINFO using the keywords "supported decision making" and "UN convention on the rights of persons with disabilities" in March 2018.Results: Eleven articles were included in the final review, which focussed on three themes: (1) different models of SDM, (2) stakeholder views, and (3) challenges for implementation. A limited number of papers described clinical models that had good theoretical consistency with SDM. The main challenges of implementation related to critical situations when "will and preferences" are poorly understood or appear contradictory. Future studies should assess specific models of SDM implementation, including related outcomes and process measures.