How should humanitarian organisations prepare and respond to COVID-19 in humanitarian settings in low- and middle-income countries? This Rapid Learning Review outlines 14 actions, insights and ideas for humanitarian actors to consider in their COVID-19 responses. It summarises and synthesises the best available knowledge and guidance for developing a health response to COVID-19 in low- and middle-income settings as at April 2020. The paper, supported by the UN Under-Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator Mark Lowcock, will be updated throughout 2020 to reflect emerging knowledge and evidence on the most effective approaches to respond to the COVID-19 Pandemic.