William Douglas McHugh (September 10, 1859 – December 26, 1923) was a United States federal judge.
Born in Galena, Illinois, McHugh read law in 1883 and was in private practice in Galena, Illinois from 1883 to 1888, and in Omaha, Nebraska from 1888 to 1896 and again from 1897 to 1920. He was general counsel to the International Harvester Corporation in Chicago, Illinois from 1920 to 1923.
On November 20, 1896, McHugh received a recess appointment from President Grover Cleveland to a seat on the United States District Court for the District of Nebraska vacated by Elmer S. Dundy. Formally nominated on December 8, 1896; McHugh was not confirmed by the United States Senate, and his judicial service was terminated on February 1, 1897.
He died in Chicago, Illinois.