What is the Largest sweet water lake in world?

The largest freshwater lake in the world by surface area is Lake Superior, which is one of the Great Lakes of North America. It spans approximately 31,700 square miles (82,100 square kilometers) and is bordered by the United States and Canada. In terms of volume, Lake Baikal in Siberia is the largest freshwater lake, containing about 20% of the world's unfrozen surface freshwater.