The unprecedented impact of COVID-19 on societies and their institutions has led to a series of extraordinary responses by governments around the world. COVID-19 has affected all dimensions of the security sector, from principles and values to cross-cutting issues, and from security providers to security overseers. The objective of this Briefing Note is to map the substantive impact of COVID-19 on security sector governance (SSG) in order to calibrate policy and operational responses, as well as to explore how this impact may be mitigated, while working towards the overarching goal of ensuring the provision of improved security for individuals, communities, and states.