Three patients with oral malignant melanoma, who survived for at least ten years after initial examination, are presented. The depth of tumor invasion was 5 mm or less in all patients. The first patient received surgery and postoperative immunotherapy and she had no recurrence more than 18 years after treatment. The second patient underwent surgery but had local recurrence after 11 years. He underwent resection and postoperative chemotherapy and was still alive more than 14 years after initial examination. The third patient received radiotherapy and had metastasis nine months after treatment. Resection and radiotherapy were performed and the patient was alive more than 14 years after first presentation.