Individuals with Intellectual Disabilities (ID) are exposed to higher rates of adverse experiences in childhood than those without ID. However, there is also an under-reporting of trauma-related disorders in this population, possibly attributed to communication deficits in those who experience it and diagnostic overshadowing. These issues are further compounded when exploring the role of trauma and offending in this population due to legal and social variations in what constitutes challenging versus criminal behaviour. This chapter looks to draw together our current understanding in this area, its implications for clinical practice, and provides a case example.