Aim: This study aimed to compare the effectiveness of Knee-to-Chest Position versus Pelvic Rocking Exercise on pain in primary dysmenorrhea in non-exercising females at the end of four weeks. Method: Screening of 60 non-exercising females aged between 18-25years having primary dysmenorrhea was done for the study based on inclusion and exclusion criteria. They were divided into 2 groups. Group A received Knee-to-Chest Position and Group B received Pelvic Rocking Exercise. Outcome measure was VAS for pain. Measurements were recorded before and after the end of the treatment period on the first day of menstrual cycle. Statistical Tool:Pre and Post Data Analysis for VAS was done using Paired t-test for both Group A and Group B. Group A and Group B inter group analysis was done using Unpaired t-test. Results: The comparison between pretreatment and posttreatment outcome measures indicated that both groups had significant improvement on pain. However Knee-to-Chest Position proved to be more effective on pain (p value = <0.001) than Pelvic Rocking Exercise. Conclusion: This study concludes that Knee-to-Chest Position is more effective than Pelvic Rocking Exercise on pain in primary dysmenorrhea in non-exercising females at the end of four weeks