Developmental Disability Professionals Day, also known as DDP Day, is observed annually on July 15 in the United States. Established in 2020 by the National Association for Qualified Intellectual Disability Professionals (NAQ), this day recognizes the vital contributions of specialists who support individuals with developmental disabilities. These professionals, including case managers and qualified developmental disability professionals, assist vulnerable populations in leading full and productive lives by addressing personal, social, and vocational challenges. The day aims to celebrate their achievements and highlight their often underappreciated work. People are encouraged to show appreciation for these professionals through gestures such as sending cards or gifts, or acknowledging them on social media.