The authors present a typical case of inguinal hernia containing rudimentary uterine horn, ovary, and fallopian tube. During the operation of herniorraphy the right ovary and fallopian tube with rudimentary uterine horn were found in the hernia sac. The woman underwent laparoscopic hysterectomy three months before herniorrhaphy and was diagnosed with unicornuate uterus. The authors reviewed the case and suggested that detailed examination such as gynecological examination and magnetic resonance imaging be performed routinely in those females with inguinal hernias.