Eagle Harbor Township is a civil township of Keweenaw County in the U.S. state of Michigan. The population was 217 at the 2020 census. The township is located on the Keweenaw Peninsula and also includes the southwestern portion of Isle Royale National Park.

Keweenaw County is a county in the western Upper Peninsula of the U.S. state of Michigan. As of the 2020 census, the county's population was 2,046, making it Michigan's least populous county. It is also the state's largest county by total area, including the waters of Lake Superior, as well as the state's northernmost county. The county seat is Eagle River.