Non-missile intracranial injuries caused by foreign bodies are quite uncommon in civilian practice. Nails, knives, screwdrivers and sewing needles are the most commonly reported agents. The authors report a unique case of an adult male patient who suffered a penetrating craniocerebral injury caused by a falling concrete reinforcing iron (rebar) from the fourth floor of a building under construction. The foreign body was safely removed by a right parietal craniectomy as a result of detailed radiological evaluation and preoperative planning. To the best of authors' knowledge, the successful surgical treatment of a penetrating brain injury caused by a rebar has not been reported previously.