Objective: ADHD has been linked to various constructs, yet there is a lack of focus on how its symptom clusters differentially associate with personality, which this study addresses. Method: The current study examines the relationship between impulsive and inattentive ADHD traits and personality, indexed by the Revised NEO Personality Inventory (NEO-PI-R) and the Millon Clinical Multiaxial Inventory (MCMI-III), in a sample of undergraduates. Results: Impulsivity was associated with NEO-PI-R and MCMI-III traits characterized by emotional distress, interpersonal problems, and disruptive behavior, whereas inattention was associated only with focus-oriented constructs. Conclusion: ADHD-related inattention is a relatively modest predictor of personality traits, as compared with hyperactivit-impulsivity. These findings have implications regarding the distinctiveness and etiology of "Diagnostic and Statistical Manual of Mental Disorders" (4th ed., text rev.; "DSM-IV-TR") ADHD types. (Contains 3 tables.)