Henry Harrison Swan (October 2, 1840 – June 12, 1916) was a United States federal judge.Born in Detroit, Michigan, Swan read law to enter the bar in 1867. He was in private practice in California in 1867, and in Detroit, Michigan from 1869 to 1870. He was an assistant United States Attorney for the Eastern District of Michigan from 1870 to 1877. He was in private practice in Detroit, Michigan from 1877 to 1891.