Individuals with developmental disabilities are 4 to 10 times more likely to become crime victims than individuals without disabilities (D. Sobsey, D. Wells, R. Lucardie, & S. Mansell, 1995). Victimization rates for persons with disabilities is highest for sexual assault (more than 10 times as high) and robbery (more than 12 times as high). There are a number of factors related to individuals' with disabilities susceptibility to interactions with the criminal justice system. In addition to these factors, many significant barriers exist, both real and perceived, that limit investigation and prosecution of these cases. How police officers perceive and understand disability play significant roles in how these cases develop and evolve. The purpose of this study was to assess police officer knowledge and perceptions of persons with disabilities.