Increasingly, families know prenatally of certain diagnoses with a high probability of developmental delays. These diagnoses could result in eligibility for Part C early intervention (EI) postnatally. Although prenatal developmental interventions (e.g., Early Head Start, Nurse Family Partnership) are common for families with environmental risks, no research has explored the potential of prenatal EI for those families with EI eligible diagnoses. This online survey research explored family and practitioner perspectives of potential prenatal EI and project-identified prenatal outcomes (i.e., health and well-being, parent-child interactions, parenting to family culture, and navigating systems and supports). Overall, both samples reported the prenatal outcomes were clear and important prenatally. Families preferred EI practitioners help with all outcomes. Practitioners preferred to take the lead on some outcomes (e.g., knowledge of and comfort with EI services, intention of EI), whereas the medical community took the lead on others. Findings support the need for further research on the potential of prenatal EI and resulted in implications for current postnatal EI. [Contributions to this study were made by Frances Davis, Heather Taylor, and Katherine Swart.]