Women, the elderly, adolescents, youth, and children, persons with disabilities, indigenous populations, refugees, migrants, and minorities experience the highest degree of socio-economic marginalization. Marginalized people become even more vulnerable in emergencies. This is due to factors such as their lack of access to effective surveillance and early-warning systems, and health services. The COVID-19 outbreak is predicted to have significant impacts on various sectors. The development of this guide was led by UN Women and Translators without Borders on behalf of the Risk Communication and Community Engagement Working Group on COVID-19 Preparedness and Response in Asia and the Pacific, co-chaired by WHO, IFRC and OCHA.