Glan () is a lake in Sweden, located in the province of ÃÂstergötland, more specifically within the municipalities of FinspÃÂ¥ng and Norrköping.
The lake has a depth of and its area is . Many species of fish can be found in it, for instance perch, asp, blicca bjoerkna, common bream, zander, and northern pike. A fact that distinguishes Glan is that during the summer the temperature at the bottom stays relatively high, around 14ðC. The lake is the main source of water for the city of Norrköping.