Harry Hunter MacLaughlin (August 9, 1927 – May 3, 2005) was a United States federal judge.Born in Breckenridge, Minnesota, MacLaughlin was in the United States Navy Yeoman from 1945 to 1946. He received a B.B.A. from the University of Minnesota in 1949 and an LL.B. from the University of Minnesota Law School in 1956. He was in private practice in Minneapolis, Minnesota from 1956 to 1972. He was an adjunct professor at William Mitchell College of Law from 1958 to 1963.