Manitou Island may refer to:

• Manitou Island (Lake Superior), a small island off the eastern tip of the Michigan's Keweenaw Peninsula
• Manitou Island (Wisconsin), one of the Apostle Islands on Lake Superior
• The Manitou Islands, in Lake Michigan near the Michigan's Leelanau Peninsula consisting of
  • North Manitou Island
  • South Manitou Island
• Manitou Island (Mackenzie River), Northwest Territories across the Mackenzie River from Fort Good Hope

Manitou Islands may refer to:

• Manitou Islands (Lake Nipissing), a series of small islands in Lake Nipissing in Ontario, Canada

• Manitoulin Island