The 1918 United States House of Representatives elections in South Carolina were held on November 5, 1918, to select seven Representatives for two-year terms from the state of South Carolina. The primary elections were held on August 27 and the runoff elections were held two weeks later on September 10. All seven incumbents were re-elected and the composition of the state delegation remained solely Democratic.
1st congressional district Incumbent Democratic Congressman Richard S. Whaley of the 1st congressional district, in office since 1913, was unopposed in his bid for re-election.
General election results
| colspan=5 |Democratic hold
2nd congressional district Incumbent Democratic Congressman James F. Byrnes of the 2nd congressional district, in office since 1911, won the Democratic primary and was unopposed in the general election.
Democratic primary Democratic primaryCandidateVotes% James F. Byrnes 7,266 56.9 Gasper L. Toole 3,212 25.1 Theodore G. Croft 1,330 10.4 N.G. Evans 974 7.6
General election results
| colspan=5 |Democratic hold
3rd congressional district Incumbent Democratic Congressman Frederick H. Dominick of the 3rd congressional district, in office since 1917, defeated Wyatt Aiken in the Democratic primary and was unopposed in the general election.
Democratic primary Democratic primaryCandidateVotes% Frederick H. Dominick 9,596 51.1 Wyatt Aiken 9,166 48.9
General election results
| colspan=5 |Democratic hold
4th congressional district Incumbent Democratic Congressman Samuel J. Nicholls of the 4th congressional district, in office since 1915, won the Democratic primary and was unopposed in the general election.
Democratic primary Democratic primaryCandidateVotes% Samuel J. Nicholls 9,651 46.4 Horace L. Bomar 5,743 27.6 D.B. Traxler 5,396 26.0
Democratic primary runoffCandidateVotes%±% Samuel J. Nicholls 9,376 51.1 +4.7 Horace L. Bomar 8,970 48.9 +21.3
General election results
| colspan=5 |Democratic hold
5th congressional district Incumbent Democratic Congressman William F. Stevenson of the 5th congressional district, in office since 1917, was unopposed in his bid for re-election.
General election results
| colspan=5 |Democratic hold
6th congressional district Incumbent Democratic Congressman J. Willard Ragsdale of the 6th congressional district, in office since 1913, was unopposed in his bid for re-election.
General election results
| colspan=5 |Democratic hold
7th congressional district Incumbent Democratic Congressman Asbury Francis Lever of the 7th congressional district, in office since 1901, won the Democratic primary and defeated Republican R.H. Richardson in the general election.
Democratic primary Democratic primaryCandidateVotes% Asbury Francis Lever 9,770 59.8 George Bell Timmerman 3,502 21.4 Thomas Gordon McLeod 2,127 13.0 Thomas F. Brantley 942 5.8
General election results
| colspan=5 |Democratic hold
See also United States House of Representatives elections, 1918 South Carolina gubernatorial election, 1918 South Carolina's congressional district s
References
"Report of the Secretary of State to the General Assembly of South Carolina. Part II." Reports of State Officers Boards and Committees to the General Assembly of the State of South Carolina. Volume II. Columbia, SC: 1919, pp. 31–33.