Background: Dysmenorrhea often occurs in adolescent girls and disrupts their daily activities. Dysmenorrhea occurs 1-2 years after menarche, with an average age of 12.8 years. One way to reduce dysmenorrhea is to use plants, such as ginger and citronella oil. This research aimed to determine the effectiveness of ginger and citronella oil on dysmenorrhea in adolescent girls. Methods: This research was quasi-experimental with a one-group pretest-posttest design approach. The sample consisted of 68 adolescent girls from Junior High School 14 Tasikmalaya City who were experiencing dysmenorrhea with moderate pain intensity. Purposive Sampling was used. The results of this study were obtained using the Numeric Rating Scale (NRS) and then analyzed using the Wilcoxon signed-rank test. Results: The research results showed that the average dysmenorrhea score before being administered ginger and citronella oil to adolescent girls was 4.6,  and after the intervention, it was 3.69 out of ten. The statistical test results showed that ginger and citronella oil were effective for dysmenorrhea in adolescent girls (p = 0.000). Conclusions: This study concluded that there is a difference in the average dysmenorrhea score before and after administering ginger and citronella oil to adolescent girls. Therefore, adolescent girls can use ginger and citronella oil to reduce dysmenorrhea. Implications for Nursing: Integrating complementary ginger and citronella oil therapy into nursing or midwifery services to reduce dysmenorrhea. This innovation can be a reference source to provide care and minimize chemical drug use.