特拉西梅诺湖（意大利语：Lago Trasimeno）位于意大利翁布里亚大区境内，水域面积为128平方公里，是波河以南最大的湖泊。前217年的特拉西梅诺湖会战中，迦太基将领汉尼拔曾在此处全歼罗马三万主力军并击毙了敌方主帅。

Lake Trasimeno (Italian:Lago Trasimeno, Italian pronunciation: [ˌlaːɡo traziˈmɛːno]; Latin:Trasumennus; Etruscan Tarśmina), also referred to as Trasimene or Thrasimene in English, is a lake in the province of Perugia, in the Umbria region of Italy. The Lake is located in the south of the Po River and to the north of the nearby Tiber River, has a surface area of 128 km (49.4 sq mi) and it is the fourth for surface in Italy (it is slightly smaller than Lake Como). Only two minor streams flow directly into the Lake and none flows out. The water level of the lake fluctuates significantly according to rainfall levels and the seasonal demands from the towns, villages and farms near the shore.