Purpose <p>People with intellectual disability experience a greater risk of maltreatment than people without intellectual disability. Maltreatment by family members presents additional risks, including greater possibilities for concealment. This scoping review summarizes extant knowledge about the familial maltreatment of people with intellectual disability and identifies gaps in the literature.</p> Methods <p>Relevant studies published between 2006 and 2024 were sourced via a systematic search of four databases. A total of 43 studies met the inclusion criteria.&#xa0;Results were summarized in both narrative and tabular formats.</p> Results <p>Five key categories were identified among these studies including the different types of maltreatment, precipitating factors, different considerations of responsibility, reactions to maltreatment by perpetrators and the community, and the disclosure or concealment of familial maltreatment of people with intellectual disability.</p> Conclusions <p>This study collated available data that specifically addresses maltreatment of people with intellectual disability by family members and identified several areas that require further investigation to address inconsistent findings (e.g., perpetrator prevalence) and under-researched topics (e.g., financial abuse). More research is needed to identify, intercept, and prevent the familial maltreatment of people with intellectual disability.</p>