History and Objectives: Due to the rarity of birth of conjoined twins and the few reports of their birth in the world and also the high mortality of these twins, this article reports on a case of conjoined twins that were born in the Tir of 1378 in Kashan.

Case report and Findings: A 28-year-old woman delivered at her third pregnancy a pair of conjoined twins with the gestational age of 36 weeks and 5 days by cesarean section. These twins had two heads, two necks, a laterally conjoined thorax and common abdomen, pelvis and male genitalia. The anus was imperforated and a fistula was present in the perineal area. These twins died twenty hours after birth because of cardio respiratory failure and the existing anomalies (Lung hypoplasia).

Conclusion: Not only the birth of conjoined twins with partially divided bodies is very rare but also the male sex of the reported case is another rare phenomenon. Death of these twins in the first 24 hours of life can be due to congenital anomalies.