In Indonesia, primary dysmenorrhea occurs in 54.89% of adolescent girls age 14-19 years old. At SMA Negeri 1 Cimahi (Cimahi 1 High School) in 2014, 161 in 167 (96.4%) second-grade female students had dysmenorrhea. Severe dysmenorrhea interrupted daily activities of 27.7% of students and caused them to be distracted in class and miss school. Severe dysmenorrhea requires affordable, cheaper and efficient nonpharmacological treatment, such as warm compress. The research aimed to identify the effect of warm compress in adolescents with primary dysmenorrhea. The study used Quasy experiment method with one group pretest-posttest design. Out of 83 second-grade female students at SMA Negeri I Cimahi Year 2014, 18 respondents were selected using simple random technique sampling. Pain score was measured using Verbal Descriptor Scale (VDS) before and after students were given warm compress for 20 minutes with water temperature of 46°C. The statistical analysis used Wilcoxon formula. The results showed that the pain level before given warm compress was 6.5 with deviation standard of 1.654, and after given warm compress was 4.22 with deviation standard of 1.665. The statistical analysis showed that warm compress affected dysmenorrhea with a p-value of 0.000 (<α=0.05 ). It was concluded that warm compress is able to influence dysmenorrhea pain level in adolescents. It was suggested to the community health center and to the school that they should conduct more health educations sessions about management of dysmenorrhea in adolescents, particularly about nonpharmacological technique of warm compress which is cheap, easy, effective and efficient. The school health clinic was also suggested to start providing warm compress