Pneumothorax is a known complication of spontaneous or traumatic chest events. Trauma is the most common cause of pneumothorax all over the world. The majority of penetrating pneumothoraces are due to stab wound in Iran. The unilateral pneumothorax commonly is due to chest stab wound but it can be caused by neck stab wound, too. Ipsilateral pneumothorax is an uncommon complication of neck stab wound in zone I. We reported a rare case of bilateral pneumothoraces due to usual unilateral neck stab wound.