贝特朗·杜·盖克兰（法语：Bertrand du Guesclin，约1320年 – 1380年7月13日），法国于百年战争初期杰出的军事领袖及民族英雄，其一生战功赫赫，被誉为「布列塔尼之鹰」(the Eagle of Brittany)。由1370年直到其逝世一直任法国骑士统帅 (Constable of France)。其对费边战略 (Fabian strategy)的灵活运用令法国没有足够力量打败英国之前避免重大战役并成功拖垮英军，同时让法国人重新夺回在战争初期失去的多数领地。

Bertrand du Guesclin (c. 1320 – 13 July 1380), nicknamed "The Eagle of Brittany" or "The Black Dog of Brocéliande", was a Breton knight and French military commander during the Hundred Years' War. He was Constable of France from 1370 to his death. Well known for his Fabian strategy, he took part in six pitched battles and won the four in which he held command.