Hamartoma is benign pathologic lesion that looks like a neoplasm. But actually hamartoma is derived from congenital developmental errors of mature tissue. That is a focal overgrowth of normal tissue components. Hamartomas have been reported as arising anywhere in the body, but rarely has it been found in the head and neck region. Above all, laryngeal hamartoma has been described few times. We report an unusual case of hamartoma located in the larynx. Epiglottis mass was found incidentally by gastrofibroscopic examination. After the mass was excised by $CO_2$ laser, pathologic diagnosis has confirmed the mass as hamartoma.