Tumors of the round ligament are rare and exceptional; leomyomas are the most common tumor. We report in our case the case of an inguinal woman with a left inguinal mass previously explored by todensitometry and magnetic resonance imaging which was found to be related to a leiomyoma of the round ligament. The patient had an excision of the tumor mass with simple follow-ups. The anatomo-pathological data confirmed the diagnosis.