In its resolutions 46/22 and 49/27, the Human Rights Council requested the Office of the United Nations High Commissioner for Human Rights to resume its work to establish, document and publish the extent of civilian casualties in the Syrian Arab Republic, in cooperation with civil society, in order to fully assess the number of people killed as a result of 10 years of conflict. Building on previous efforts on casualty recording and reporting on the Sustainable Development Goals indicator 16.1.2 on conflict-related deaths, OHCHR presents its statistical analysis covering the period from March 2011 to March 2021.