The present paper reports a 28-year-old male with an asymptomaticmalignant Triton tumor of the lung. Chest radiographs revealed a mass in the left hilum. The left lower lobe including the tumor and the mediastinal lymph node was resected. There was no metastasis or tumor recurrence during the one-year period following the surgical procedure. To our knowledge, this is the first case report of a primary pulmonary malignant Triton tumor.