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Background & Aim: Pain control, especially in the first 24 hours after cesarean section, could reduce the incidence of postoperative complications. The aim of the present study was to evaluate the efficacy of subcutaneous bupivacaine injection around cesarean scar in pain relief after cesarean. Methods: This clinical trial was conducted on 102 pregnant women undergoing cesarean section. Samples were randomly divided into intervention and control groups. In intervention group, 10 ml of bupivacaine (Marcaine) 0.5% and in control group 10 ml of distilled water were used for subcutaneous injection around the scar. Pain assessment, using a visual pain scale (VAS), was measured at different hours after surgery. Moreover, the analgesic doses at 24 hours were recorded. Data were analyzed using chi-square and t-test. Results: The average pain score at different hours in the intervention group was 1.72, and in the control group was 3.85. The average consumption of diclofenac suppositories in the intervention group was 0.35 and in the control group was 1.5. The differences about average pain score and consumption of diclofenac in both groups were significant (P= 0.001). Conclusion: Subcutaneous injection of bupivacaine can be recommended in pregnant women who are undergoing cesarean section, for reducing the pain after cesarean.