John Lanneau McMillan (April 12, 1898 - September 3, 1979) was a United States Representative from South Carolina. Born on a farm near Mullins, he was educated at Mullins High School, the University of North Carolina, as well as the University of South Carolina Law School and National Law School in Washington, D.C. He was selected to represent the United States Congress at the Interparliamentary Union in London in 1960, and in Tokyo in 1961.
McMillan was elected as a Democrat to the Seventy-sixth and to the sixteen succeeding Congresses, serving from January 3, 1939 to January 3, 1973; while in Congress he was chairman of the Committee on District of Columbia (Seventy-ninth, Eighty-first, Eighty-second and Eighty-fourth through Ninety-second Congresses). When Walter Washington, the first home-rule mayor of the District of Columbia, sent his first budget to Congress in late 1967, McMillan, chair of the House Committee on the District of Columbia, responded by having a truckload of watermelons delivered to Washington's office.[1] McMillan was an unsuccessful candidate for renomination in 1972 to the Ninety-third Congress. He resided in Florence, South Carolina, where he died in 1979; interment was in the McMillan family cemetery, Mullins.