The management of multilateral fish stocks is suffering from the COVID-19 pandemic. The pandemic has disrupted the operations of Regional Fisheries Management Organisations (RFMOs), which have jurisdiction over fish stocks that either straddle the exclusive economic zones of several countries or are predominantly in the high seas. This is largely because of reduced monitoring, control and surveillance capacity due to limitations imposed on the operations of observer and surveillance programmes and the challenges of decision making in virtual meetings. A survey undertaken in July 2020, to which 13 RFMOs and nine OECD members responded, reveals that: i) over two-thirds of RFMOs have reduced in-person and on-board observation of vessels, increasing the opportunity for unscrupulous operators to engage in illegal, unreported or unregulated (IUU) fishing; and ii) almost all (92.3%) RFMOs surveyed have experienced disruption to their regular scheduled meetings and 84.6% reported disturbance to regular decision making. Nonetheless, on a positive note, the COVID-19 pandemic may spur the uptake of new technologies for virtual meetings and the monitoring of fishing activities.