Background Adolescent girls in humanitarian settings are especially vulnerable as their support systems are often disrupted. More than 20 years of violence in the Democratic Republic of the Congo (DRC) has weakened the health system, resulting in poor sexual and reproductive health (SRH) outcomes for women. Little evidence on adolescent contraceptive use in humanitarian settings is available. CARE, International Rescue Committee (IRC), and Save the Children, in collaboration with the Reproductive Health Access, Information and Services in Emergencies (RAISE) Initiative, Columbia University, have supported the Ministry of Health (MOH) since 2011 to provide good quality contraceptive services in public health facilities in conflict-affected North and South Kivu. In this study, we analyzed contraceptive use among sexually active young women aged 15-24 in the health zones served by the partners' programs. Methods and findings The partners conducted cross-sectional population-based surveys in program areas of North and South Kivu using two-stage cluster sampling in six health zones in July-August 2016 and 2017. Twenty-five clusters were selected in each health zone, 22 households in each cluster, and one woman of reproductive age (15-49 years) was randomly selected in each household. This manuscript presents results from a secondary data analysis for 1,022 women aged 15-24 who reported ever having sex: 326 adolescents (15-19 years) and 696 young women (20-24 years), 31.7% (95% confidence interval [CI] 29.5-34.1), of whom were displaced at least once in the previous five years. Contraceptive knowledge was high, with over 90% of both groups able to name at least one modern contraceptive method.