John Day Putnam

John Day Putnam was a member of the Wisconsin State Assembly.

Putnam was born on June 19, 1837 in Brooklyn, Connecticut. He was a direct descendant (second great grandson) of Israel Putnam. Putnam went on to reside in Troy, St. Croix County, Wisconsin. During the American Civil War, he served with the 1st Wisconsin Volunteer Infantry Regiment of the Union Army, eventually becoming the regiment's commissary sergeant. In 1874, Putnam moved to River Falls (town), Wisconsin. He died in 1904.

Putnam was a member of the Assembly in 1883. Other positions he held include Chairman (similar to Mayor), Treasurer and Assessor of Troy, Chairman of the town board (similar to city council) of River Falls and Chairman of the county board of Pierce County, Wisconsin. He was a Democrat.