This policy brief establishes a framework to develop and evaluate National Action Plans (NAPs) on preventing and countering violent extremism (P/CVE). Based on the key good practice components identified in the international literature on NAPs across policy fields ranging from sustainable development to tuberculosis control, this framework aims to improve approaches to P/CVE strategic planning by national authorities. This framework may enable a range of stakeholders to better assess the strengths and weaknesses of new or existing P/CVE NAPs, as well as provide basic guidelines to support and further improve their development, implementation, monitoring, and evaluation.