Charles W. Mullin (December 31, 1845 – March 8, 1919) was an American judge, lawyer and politician.

He went to the public school in Black Hawk County.

During the American Civil War, Mullan served in the 47th Iowa Volunteer Infantry Regiment.

Then from 1913 until his death in 1919, Mullan served as an Iowa District Court judge.

Mullan died at St. Mary's Hospital in Rochester, Minnesota after undergoing surgery.