Joshua Willis Alexander (January 22 1852 February 27 1936) was United States Secretary of Commerce from December 16, 1919 - March 4, 1921 in the administration of President Woodrow Wilson. He was born in Ohio, but later moved to Missouri, where he engaged in local politics and business, eventually becoming a judge. He was a member of the United States House of Representatives from Missouri from 1907 until his resignation to become commerce secretary in 1919. He was a member of the United States Democratic Party.