BACKGROUND Discrepancy between X-ray readings of emergency physicians (EPs) versus radiologists was reported between 0.95% and 16.8% in different studies. The discordance was even higher when specific studies such as chest X-rays (CXR) were probed. OBJECTIVES This prospective study was conducted to assess the discrepancies between emergency and radiology departments with respect to interpretation of the traumatic chest X-rays. PATIENTS AND METHODS This prospective study was conducted in Shohadaye Tajrish Hospital, Tehran, Iran, from March to April 2014. Based on Advanced Trauma Life Support (ATLS) guidelines, plain chest radiography (CXR) was ordered for all patients in two standard views of posterior-anterior and lateral. All CXRs were interpreted by a corresponding emergency medicine specialist and a radiologist blind to the clinical findings of the patients. Finally, the results of two interpretations were compared. Accuracy, sensitivity, specificity, and predictive values of traumatic CXR interpretation were calculated by EPs with 95% of confidence interval (CI). RESULTS The evaluation of EPs was identical to that of the radiologists in 89.5% of the cases. Ninety-eight percent (98%) indicated total agreement and 1.5 percent total disagreement. CONCLUSIONS There is a high agreement between EPs and radiologists in CXR interpretations in Shohadaye Tajrish Hospital. Thus, EPs can substitute radiologists in the emergency department. More improvements are recommended to achieve the standard level of agreement.