Abstract. BACKGROUND: Attention Deficit Hyperactivity Disorder (ADHD) is characterized by inattention, hyperactivity, and impulsivity and includes one of the most prevalent neurodevelopmental disorders in childhood. Despite the high prevalence, many professionals who work with children and adolescents with this disorder do not have enough knowledge on the subject. Physical education professionals deal directly with these children and need the knowledge to choose which skills and/or motor criteria to emphasize in their classes. However, issues related to neurodevelopmental disorders are not frequently addressed in the physical education courses, which impairs proper dealing with this population. AIM: This study aims to verify the level of knowledge about ADHD and its motor impairments in professionals and students of physical education. METHOD: A questionnaire was developed by researchers of motor behavior and was applied to professionals and students of physical education. The participants' responses were then analyzed through descriptive and inferential statistics. RESULTS: The results indicate that although the volunteers have basic notions about the subject, they do not have enough preparation to deal with children with ADHD. CONCLUSION: It was concluded that the knowledge about ADHD is insufficient and a reformulation in the curriculum of physical education courses is recommended.