Which island in Lake Huron is the world's largest freshwater lake island?

The island in Lake Huron that is the world’s largest freshwater lake island is Manitoulin Island.

Manitoulin Island belongs to Ontario, Canada, and sits in Lake Huron between the lake’s main basin, Georgian Bay and the North Channel. With an area of about 2,766 square kilometres, it is commonly described as the world’s largest island located in a freshwater lake.

Its size produces a remarkable geographic “island within an island” pattern: Manitoulin itself contains 108 freshwater lakes. The largest is Lake Manitou, which covers about 104 square kilometres. Lake Mindemoya even contains Treasure Island, creating an island in a lake on an island in a lake.

The name reflects Anishinaabe tradition. Manitoulin is derived through French from an Odawa or Ojibwe name associated with a spirit or underwater cave. The island also preserves evidence of Indigenous occupation stretching back thousands of years, including archaeological discoveries at Sheguiandah. Mackinac Island and Drummond Island are also in the Great Lakes, but neither approaches Manitoulin’s area.