Gilchrist Porter (1 November 1817-1 November 1894) was a member of the US House of Representatives (W-MO 2) from 4 March 1851 to 3 March 1853 (succeeding William Van Ness Bay and preceding Alfred W. Lamb) and from 4 March 1855 to 3 March 1857 (succeeding Lamb and preceding Thomas L. Anderson). Born in Windsor, Virginia, he practiced law in Bowling Green, Missouri before serving in Congress and as a circuit judge from 1866 to 1880.