John Millen (1804-15 October 1843) was a member of the US House of Representatives (D-GA AL) from 4 March to 15 October 1843, succeeding Roger Lawson Gamble and preceding Duncan Lamont Clinch. Born in Savannah, he practiced law before serving in the state house in 1828, 1834, 1835, 1839, and 1840 and in Congress.