Vance Criswell McCormick (June 19, 1872 – June 16, 1946) was an American politician and prominent businessman from Harrisburg, Pennsylvania. He served as mayor of Harrisburg from 1902 to 1905 and as United States Democratic National Committee chairman from 1916 to 1919. He was appointed chair of the American delegation at the Treaty of Versailles in 1919, under President Woodrow Wilson.