Background & objectives: Although adult attention-deficit/hyperactivity disorder (ADHD) is well recognized in western countries, there are no reports of adult ADHD from India. Therefore, this study was planned to identify ADHD in adults in an Indian psychiatry outpatient setting and elicit its phenomenology and co-morbidities. Methods: A total of 283 adults were screened using Adult ADHD Self-Report Scale-v1.1 (ASRSV1.1) screener. Screen positives were evaluated on ASRSv1.1 symptom checklist, World Mental Health Survey Initiative Version of the World Health Organization Composite International Diagnostic Interview (WMH-CIDI) and by clinical assessments. DSM-IV-TR and Wender-Utah criteria were used for diagnosis.