This article describes a Delphi study to identify research priorities of gerontological social work practitioners and to compare these priorities with those of social work academic researchers. A national expert panel of 52 gerontological social work practitioners completed questionnaires to delimit a set of high-priority research topics. Findings were compared with a similar Delphi study conducted with academic social work researchers. The researcher panel and the practitioner panel endorsed a need for intervention research. Practitioners also identified several unique priorities, including income security and long-term care policies, decision making, and planning for later life. The authors suggest four substantive areas (housing and transitions in living arrangements, family caregiving, health and mental health, and workforce) and four crosscutting themes (intervention research, social policy, service delivery, and capacity building) as a potential organizing framework for a research agenda for gerontological social work.