As recently as 1997, the empirical database guiding the selection of psychosocial treatments for adults with attention-deficit/hyperactivity disorder (ADHD) could be summarized as "entirely anecdotal" (American Academy of Child and Adolescent Psychiatry, 1997, p. 107S). However, there is preliminary evidence supporting the use of psychosocial interventions (in conjunction with pharmacotherapy) tailored to meet the unique needs of adults with ADHD. The aim of this article is to review the current evidence base for psychosocial treatments for adult ADHD. We provide background information about adult ADHD, review the extant research of psychosocial treatments, summarize important aspects of psychotherapy for adults with ADHD, and offer suggestions for future research that may improve psychosocial services and treatment outcomes for this clinical population.