A ten-month-old girl presented to our clinic with a progressively enlarging congenital mass at the midline suprasternal location. Histopathologic examination revealed a benign cyst with stratified squamous keratinized epithelium with numerous eccrine glands in the sinus wall. The diagnosis was compatible with dermoid cyst. Dermoid cysts of the trunk are rare lesions, but a midline location is characteristic for these congenital masses. A dermoid cyst should be high on the list of differential diagnoses given a unilocular midline cyst in a neonate.