Leiomyoma of the trachea is extremely rare but important to recognize early because they are curable. A case of leiomyoma of the trachea is described in 340-year-Old woman. She was admitted for dyspnea, coughing and sputum for 3 years. Under the impression of asthma she was treated but not improved. Chest CT showed an intraluminal tracheal mass just above the carina. Fiberoptic bronchoscopy revealed a round intraluminal mass on the membranous portion of trachea 4cm above the carina. The tumor was excised by wedge resection and end-to-end anastomosis of the trachea was performed. The pathologic examination revealed leiomyoma of the trachea. We report a case of leiomyoma of the trachea which was successfully resected.