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Introduction Conjoined twinning in triplet pregnancy is rare, with an incidence of less than one in a million deliveries. Common triplet pregnancies are monochorionic triamniotic, trichorionic triamniotic, dichorionic triamniotic and only 2% are dichorionic diamniotic triplet pregnancy. Conjoined twins in a dichorionic diamniotic (DCDA) triplet pregnancy are extremely rare. The pathogenesis of conjoined twins is unclear. Fission theory and fusion theory are widely accepted. Fission theory suggest that the embryo undergoes incomplete division 13-15 days after fertilization resulting in conjoined twins. The fusion theory suggests that 2 separate embryos undergo a second fusion 13 days after fertilization Case report 21 year old primi gravida conceived by ovulation induction with no other comorbidities was detected to have, DCDA triplets , conjoined twins - thoracopagus with shared heart at 16 weeks of gestation . As the prognosis for conjoined twins with single heart is remote, she underwent fetal reduction of conjoined twins at 16 weeks of gestation. Then she presented at 26 weeks of gestation with preterm labour pain and expelled reduced conjoined twin - thoracopagus with its placenta. She was sent home under antibiotic coverage after the expulsion and the remaining single live intrauterine pregnancy continued. Growth scan at 38 weeks shows stage I FGR with abnormal doppler and hence decided termination by LSCS . She delivered a male baby of weight 2550gm . post op period was uneventful. Conclusions Early determination of chorionicity and antenatal diagnosis of conjoined twins in triplet gestation are critical for individualized management options and the prognosis of normal triplets . if there are limitations in successful separation after birth , early selective termination of the conjoined twins should be done to improve perinatal outcome of the normal triplets.