Faithorn Township is a civil township of Menominee County in the U.S. state of Michigan.

[2] The township is in western Menominee County, bordered to the west, across the Menominee River, by Marinette County in the state of Wisconsin.

Dickinson County, Michigan, is to the north.

According to the United States Census Bureau, the township has a total area of 54.2 square miles (140 km2), of which 53.7 square miles (139 km2) are land and 0.6 square miles (1.6 km2), or 1.05%, are water.

[1] As of the census[3] of 2000, there were 214 people, 91 households, and 63 families residing in the township.