Congenital cataracts are lens opacities that cause visual impairment in children. Early diagnosis of congenital cataracts is necessary because it facilitates appropriate intervention that can result in good visual function. Moreover, prenatal diagnosis, in particular,aids in the development of a therapeutic plan for the neonate. Ocular anomalies can be diagnosed prenatally because of the recent progress in obstetric ultrasonography. We report a case in which prenatal ultrasonography was used to diagnose congenital cataract. A brief review of the literature has also been provided.