Introduction:Postoperative analgesia after cesarean section poses unique clinical challenges to anesthesiologist. Intrathecal buprenorphine is a promising drug for postoperative analgesia. Aims: The aim of this study was to compare the efficacy of two doses of buprenorphine (45 μg and 60 μg) as an adjuvant to hyperbaric bupivacaine for postoperative analgesia in caesarean section. Materials and methods: This was a prospective, randomized, double-blind controlled study. Ninety ASA physical status Class II parturients posted for elective caesarean section. The computer-generated simple random sampling procedure was used to allocate the subjects into three Groups A, B, C of 30 each