Grant Township is a civil township of Keweenaw County in the U.S. state of Michigan. The population was 275 at the 2020 census. Grant Township is one of the most isolated municipalities in Michigan, as it forms the tip of the Keweenaw Peninsula, which projects into Lake Superior.

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.