This report discusses the key factors for the successful response of the Republic of Korea to coronavirus disease (COVID-19) and analyzes the country's performance in terms of comprehensive disaster risk management. There was a time when the ROK became the second highest in the world for the number of daily confirmed COVID-19 cases. But the country was able to quickly suppress the surge and reduce the number of confirmed cases. This report discusses lessons that ADB developing member countries can learn from the ROK's COVID-19 response experience.