A retrospective analysis was performed to evaluate the reproductive performance of 17 women with uterine anomalies who underwent in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) and embryo transfer (ET). Eight women had a unicornuate uterus, and two a didelphic uterus. Seven women with a subseptate uterus underwent metroplasty before assisted reproduction. Ten (58.8%) out of 17 women achieved 11 (18.0%) pregnancies out of 61 embryo transfers in 55 stimulated cycles. The implantation rate per embryo was 8/83 (9.6%) for women with a unicornuate uterus, one of 17 (5. 9%) for those with didelphic uterus and four of 48 (8.3%) for those with subseptate uterus. Pregnancy rates per embryo transfer were 19. 4, 11.1 and 19.0%, respectively. Three out of 11 pregnancies were ectopic, three were miscarriages and five were full-term deliveries, two sets of twins. Delivery rate per embryo transfer was 5.0% in patients with unicornuate or didephic uterus and 14.3% in women who had a subseptate uterus operated prior to assisted reproduction. Women with uterine anomalies treated by IVF or ICSI had low implantation rates. Pregnancy in a subseptate uterus which has been previously operated had a trend to end more frequently in delivery than that in a unicornuate uterus or in a didelphic uterus.