斯图尔湖（Storsjön）是瑞典国内第五大湖泊。面积464平方公里，最大深度74米。位于耶姆特兰省境内。城市厄斯特松德坐落于斯图尔湖东岸。湖内有一岛屿，名福洛色岛（Frösön）。斯图尔湖以其的水怪传说而闻名。

Storsjön (Swedish pronunciation: [ˈstuːɧœn], lit. "The Great Lake") is the fifth largest lake in Sweden, with an area of 464 km² and a greatest depth of 74 m. It is located in the province of Jämtland in modern Jämtland County. From Storsjön runs the river Indalsälven and the lake contains the major island Frösön. The city of Östersund is located on the east shore of the lake, opposite Frösön.