We evaluated the efficacy of concurrent chemoradiotherapy (CRT) using cisplatin/nedaplatin and 5-FU for advanced esophageal cancer. Thirteen patients with locally advanced esophageal cancer (T4 cases) and 3 with recurrence of esophageal cancer were treated with radiotherapy (40-70 Gy) and 5-FU combined with cisplatin/nedaplatin concurrently. T4 patients who obtained down-staging by CRT also underwent esophagectomy. A complete response was obtained in one case, partial response in 8 cases, and no change in 7 cases. The overall response rate was 56.3%. A pathological complete response was obtained in one case in which curative resection was performed after CRT. Bone marrow suppression was observed in 68.8% and grade 3 and 4 bone marrow suppression was observed in 43.8%. Concurrent CRT using cisplatin/nedaplatin and 5-FU for advanced esophageal cancer has a high response rate and patients obtaining down-staging by CRT as a neoadjuvant therapy have a chance for long survival after curative resection in locally advanced cases.