Objective: From April to June 2005, the authors investigated professor perceptions of college students with attention deficit hyperactivity disorder (ADHD). Participants: 253 participants completed the ADHD Beliefs Survey-Revised, a 40-question survey measuring professor perceptions of ADHD. Methods: Analysis of variance measured false and reasonable beliefs related to ADHD. Results: Results indicated that professors with differing levels of education, years of teaching experience, colleges in the university or community college, previous experiences with a student with ADHD, and ADHD training did not differ significantly in perceptions regarding general ADHD knowledge or college students with ADHD. (Contains 2 tables.)