Brain dead patients are almost the only source of organ for lung transplantation. As a result, the harvest rate in these patients is the limiting factor for lung transplantation. This is while lungs are the most sensitive organs regarding the appropriateness for harvest and transplantation and this could have a great impact on the harvest rate. The aim of the current study is to find what percent of the lungs are appropriate for transplantation in brain dead patients. Using the brain death database at organ procurement unit of Masih Daneshvari Hospital, we sought to find which brain dead patients have donated his/her lungs. We also reviewed the causes behind failing to donate an organ. From total 93 brain death registration form 2004, only 4.6% of patients donated their lungs. 16.1% of the patients had acceptable oxygen challenge test results (< 300 mmHg). Pulmonary aspiration and contusion were among the causes that lung harvest was not performed in patients with acceptable oxygen challenge test results. In conclusion in our center only a very small percent of lungs are appropriate for harvest in brain dead patients. Aside from the cause of injury, proper management of the patients has an important role in prevention of injury to the lungs and keeping them in good condition for harvest. The authors believe that especial attention should be paid to education of ICU staffs and physicians to enhance the caring quality and hence increase the lung harvest rate.