Joseph S. Mack (1919-2005) was a Democratic member of the Michigan Senate, representing much of the Upper Peninsula from 1967 to 1990.

He worked on the Manhattan Project during World War II.

Mack returned to Ironwood in 1946 and began his involvement in politics.

In 1964, he won election to the Michigan Senate and served 26 years, resigning in 1990 after being charged with fraudulently obtaining travel reimbursement.

[3] While in the Senate, Mack focused his efforts on economic development, outdoor recreation, and natural resources.