Charles Dunn (December 28, 1799 – April 7, 1872) was an American lawyer, judge, and Wisconsin pioneer.

His daughter, Catherine, was married to Wisconsin's first state governor, Nelson Dewey.

Among other cases, Dunn presided at Mineral Point in the murder trial of William Caffey in 1842.

It is said to be the last hanging in Wisconsin, and Caffey's ghost is said to frequent the nearby Walker House hotel.

Dunn then resumed his law practice, settling and living in Belmont, Wisconsin, for the rest of his life.