The patient, 45-years-old-male visited our clinic with chief complaint of small egg sized lump behind the left side of the tongue. The indirect laryngoscopy and visual inspection of larynx revealed a smooth, cystic and about 1.5×1.5×2cm sized mass on the vallecula, which was white-yellowish. The cystic mass was removed out under the suspension microlaryngoscopy and the histopathologic examination revealed a typical feature of the sebaceous cyst of the larynx. The sebaceous cyst of the larynx is rarely seen in the field of otolaryngology and there is reported only one case in Korea. A case of the laryngeal sebaceous cyst is reported with reviews of the literature.