Persons with intellectual and developmental disabilities (IDD) have the right to participate in research with dignity and respect. Information about persons with IDD is often acquired from third parties; however, they are capable of, and want to be included in, research. Nevertheless, current practices to protect persons with IDD from harm may preclude them from participating in research. Therefore, inclusive research requires ethical and practical considerations to ensure that persons with IDD are treated fairly. In this chapter, experiences and recommendations in four aspects of ethical research with persons with IDD are shared: (1) accessibility, (2) consent, (3) confidentiality, and (4) research participation risks. Interactions with research ethics boards are used to illustrate the complexity of these ethical considerations and the need for guidelines.