Yes, ADHD is considered a disability under the Americans with Disabilities Act (ADA). The ADA defines a disability as a mental or physical or impairment that limits daily activities of living.  ADHD can undoubtedly qualify as a disability under this definition, as it can significantly restrict an individual's ability to function in school, work, and social settings. If you have ADHD and believe it impacts your ability to participate in these areas of life, you may be protected by the ADA.