施坦贝尔格湖（德文：Starnberger See，旧称Würmsee）位于德国巴伐利亚州首府慕尼黑市的西南面25千米处。它是继博登湖、米里茨湖、基姆湖和什未林湖后德国第五大湖。由于其平均深度之深，它成为德国蓄水量第二大的湖泊。它位于施塔恩贝格县境内，不属于任何镇。它是巴伐利亚州的资产。靠近其西岸，有一座湖中小岛，名曰“罗森岛（德文：Roseninsel）”。

1886年巴伐利亚国王路德维希二世在施坦贝尔格湖淹死。今天在事故发生的地方有一个木十字架作为纪念。

从1976年开始施坦贝尔格湖属于受湿地公约保护的地区。

Lake Starnberg (German:Starnberger See) — called Lake Würm (German Würmsee) until 1962, and also known as Fürstensee — is Germany's fifth largest freshwater lake in terms of area and, due to its great average depth, the second largest in terms of water volume. The lake and its surroundings are an unincorporated area within the rural district of Starnberg; the lake itself is the property of the state of Bavaria and is administered by the Bavarian Administration of State-Owned Palaces, Gardens and Lakes.