Which Great Lake contains the most islands?

Lake Huron contains the most islands of any Great Lake, with more than 30,000 islands.

Many of these islands are small, rocky, and scattered through the lake’s northern and eastern regions. The largest is Manitoulin Island, which is also the world’s largest freshwater island. Its surrounding geography includes bays, channels, and smaller islands that make the northern part of Lake Huron especially complex.

Lake Huron’s island-rich landscape reflects the effects of glaciation. Moving ice carved irregular shorelines and left exposed bedrock, creating numerous offshore islands and narrow passages. Georgian Bay, a large northeastern arm of the lake, adds further complexity to the coastline.

The number of islands can vary slightly depending on mapping methods and the minimum size used for counting. Nevertheless, Lake Huron is consistently identified as the Great Lake with the greatest number of islands. Manitoulin Island is often discussed separately because of its exceptional size and freshwater setting.