梅拉伦湖（瑞典语：Mälaren）位于瑞典东部，水域面积1,140平方千米，水深64米，是该国仅次于维纳恩湖和韦特恩湖的第三大湖。 梅拉伦湖东西长120公里，由西南流向东北汇入波罗的海。梅拉伦湖流域的著名岛屿有，皇后岛，桦木岛等等。是瑞典维京文化发源地之一。梅拉伦源于维京语，意思是石头海滩。

Mälaren ( Swedish pronunciation ) (historically occasionally referred to as Lake Malar in English) is the third-largest lake in Sweden (after Vänern and Vättern). Its area is 1,140 km² and its greatest depth is****m. Mälaren spans 120 kilometers from east to west. The lake drains, from south-west to north-east, into the Baltic Sea through the Södertälje Canal, Hammarbyslussen, Karl Johansslussen and Norrström. The easternmost bay of Mälaren, in central Stockholm, is called Riddarfjärden. The lake is located in Svealand and bounded by the provinces of Uppland, Södermanland, Närke, and Västmanland. The two largest islands in Mälaren are Selaön (91 km²) and Svartsjölandet (79 km²).