This review article examines current knowledge about the efficacy of art therapy based on the findings of 8 randomized controlled trials (RCTs) conducted with adult populations from 2008-2013 that met a high standard of rigor. Of these studies, all but one reported beneficial effects of art therapy. Review findings suggest that art therapy may benefit a range of individuals, including older adults, war veterans, and prison inmates. However, there is a need for further research using RCTs to examine more conclusively art therapy outcomes and the specific populations in which art therapy interventions offer greatest benefit.