This publication highlights a wide range of research topics collaboratively developed and prioritized by experts from across the SOF community. These research topics are organized to support the USSOCOM Commander's three SOF priorities: win, transform, and people. To develop this topics list, recommendations were solicited from the USSOCOM headquarters staff, the theater special operations commands (TSOCs), component commands, SOF chairs from the war colleges, and select research centers and think tanks. This list and the accompanying topic descriptions are a guide to stimulate interest and thinking. Topics may be narrowed or otherwise modified as deemed necessary (e.g., to suit school writing requirements or maximize individual interests and experiences). The researcher should explore and identify doctrine, capabilities, techniques, and procedures that will increase SOF efficacy in addressing them. At the same time, the research on these topics should be used to inform policymakers, the larger military profession, and the public of the issues and challenges facing the SOF enterprise.