Congenital nasal dorsum cysts are very rare lesions. Its differential diagnosis lies between gliomas, dermoid cysts and encephaloceles. We present a case of solitary congenital external nasal cyst with no intranasal fistulous tract connection in a newborn. Histopathologic analysis of the mass demonstrated findings consistent with an external mucocele. Total excision with external open approach provided the cure with good cosmetic outcome. This is the first report presenting an external mucocele in a newborn in the literature. External mucoceles should be kept in mind in the differential diagnosis of congenital nasal dorsum masses.