Youth transitioning from foster care to adulthood are at higher risk for alcohol and substance abuse disorders than general population youth. At the same time, these youths are often recipients of strong clinical intervention, often at levels considered unnecessary, for other mental health or behavioural challenges. Because of this, there is sometimes resistance from providers to offer services such as substance abuse prevention programming as it may be seen as contributing to youths' overclinicalization, stigmatization, or retraumatization. Using thematic content analysis, this qualitative study analysed focus groups with community stakeholders providing recommendations on support services for youth transitioning from foster care to adulthood to derive strategies for delivering substance abuse prevention programming in a way that enhances youth self‐determination. Findings were organized by self‐determination theory's 3 key psychological needs: autonomy, competence, and relatedness. All three needs were represented in stakeholder recommendations, which were translated into strategies for bolstering youths' achievement of each need. Strategies include a mix of those already present in motivational interviewing‐based brief substance abuse prevention interventions as well as more unique strategies that are much less frequently employed but that may better meet the needs of youth with foster care experience.