This report seeks to explore the unique experience of adolescent girls by examining the types of gender-based violence affecting this group as well as drivers of this violence, within the frame of high levels of gender inequality in South Sudan. Data for this study was collected as part of the research program of the What Works to Prevent Violence Against Women and Girls (‘What Works’) Consortium funded by the government of the United Kingdom (UK)’s Department for International Development (DfID). Through this programme, the International Rescue Committee (IRC), the Global Women’s Institute (GWI) at the George Washington University and CARE International UK conducted a mixed-methods study in five locations in South Sudan. Secondary analysis of this data set focusing on the experiences violence against adolescent girls (aged 15-19) was supported by the Gender and Adolescence: Global Evidence (GAGE) consortium. Quantitative data focused on adolescent girls residing in the Juba Protection of Civilian (PoC) sites and the town of Rumbek. Qualitative data from the five study locations (Bentiu PoCs, Juba City, Juba County, Juba PoCs, Rumbek) was used to supplement the quantitative data.