Background: Induction of labour is indicated when the benefits to either the mother or foetus outweigh those of continuing the pregnancy. Many drugs or methods have been tried for the purpose, the latest addition being prostaglandins. Objective: The present study was taken up to compare the safety and efficacy of 50 µg intra-vaginal Misoprostol and a single dose of 0.5 mg intra-cervical Dinoprostone in induction of labour. Methods: 220 women admitted in RIMS during the period Jan 2003-Aug 2004 and needing induction of labour were randomly allocated into two groups, each group consisting of 110 women. To one group Misoprostol was given while the other group got Dinoprostone. These two groups were followed up up-to the perinatal period. Result: The mean Bishop's score at 4th hour were found to be significantly increased in both the groups, the mean score at 4th hour being significantly higher in Misoprostol group as compared to Dinoprostone group (5.77 Vs 4.83). The need for oxytocin augmentation was significantly less in Misoprostol group. The induction-delivery period was also found to be much shorter in this group when compared to Dinoprostone group (10.8±4.8 hours Vs 12.0±7.7 hours). The proportion of vaginal delivery was comparable in the two groups. Apgar scores of babies in the two groups also were comparable. Maternal and perinatal complications were very less in both the groups. Conclusion: Both intra-vaginal Misoprostol and intra-cervical Dinoprostone were found to be effective and safe for induction of labour. However, Misoprotol is less expensive, easy to administer and more effective than Dinoprostone with minimal side effects when cases are monitored properly.