The 1940 United States House of Representatives elections in South Carolina were held on November 5, 1940, to select six Representatives for two-year terms from the state of South Carolina. All five incumbents who ran were re-elected and the open seat in the 1st congressional district was retained by the Democrats. The composition of the state delegation thus remained solely Democratic.
Incumbent Democratic Congressman Butler B. Hare of the 3rd congressional district, in office since 1939, defeated former Representative John C. Taylor in the Democratic primary and Republican A.F. Ernest in the general election.
Incumbent Democratic Congressman Joseph R. Bryson of the 4th congressional district, in office since 1939, defeated Virgil Evans in the Democratic primary and Republican J.D. McCullough in the general election.
Incumbent Democratic Congressman James P. Richards of the 5th congressional district, in office since 1933, defeated Roy C. Cobb in the Democratic primary and Republican C.F. Pendleton in the general election.
Incumbent Democratic Congressman John L. McMillan of the 6th congressional district, in office since 1939, defeated James P. "Spot" Mozingo in the Democratic primary and Republican C.B. Ruffin in the general election.
Jordan, Frank E. The Primary State: A History of the Democratic Party in South Carolina, 1876-1962. pp. 99, 106, 111, 116, 120, 125.
"Supplemental Report of the Secretary of State to the General Assembly of South Carolina." Report of the State Officers Boards and Committees to the General Assembly of the State of South Carolina. Volume I. Columbia, SC: 1941, pp. 7–9.
