| Election Name: | 1964 United States House of Representatives elections in South Carolina |
| Country: | South Carolina |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1962 United States House of Representatives elections in South Carolina |
| Previous Year: | 1962 |
| Next Election: | 1966 United States House of Representatives elections in South Carolina |
| Next Year: | 1966 |
| Seats For Election: | All 6 South Carolina seats to the United States House of Representatives |
| Election Date: | [1] |
| Party1: | Democratic Party (United States) |
| Last Election1: | 6 |
| Seats1: | 6 |
| Popular Vote1: | 386,738 |
| Percentage1: | 88.26% |
| Swing1: | 2.28% |
| Party2: | Republican Party (United States) |
| Last Election2: | 0 |
| Seats2: | 0 |
| Popular Vote2: | 48,970 |
| Percentage2: | 11.18% |
| Swing2: | 2.84% |
The 1964 United States House of Representatives elections in South Carolina were held on November 3, 1964, to select six Representatives for two-year terms from the state of South Carolina. The primary elections were held on June 9 and the runoff elections were held two weeks later on June 23. All five incumbents who ran were re-elected and the open seat in the 5th congressional district was retained by the Democrats. The composition of the state delegation thus remained solely Democratic.
Incumbent Democratic Congressman L. Mendel Rivers of the 1st congressional district, in office since 1941, was unopposed in his bid for re-election.
|-| | colspan=5 |Democratic hold|-
Incumbent Democratic Congressman Albert Watson of the 2nd congressional district in office since 1963, was unopposed in his bid for re-election.
|-| | colspan=5 |Democratic hold|-
Incumbent Democratic Congressman William Jennings Bryan Dorn of the 3rd congressional district, in office since 1951, won the Democratic primary and was unopposed in his bid for re-election.
| Democratic primary | ||
|---|---|---|
| Candidate | Votes | % |
| William J.B. Dorn (incumbent) | 39,934 | 70.6 |
| T. M. Tucker | 16,658 | 29.4 |
|-| | colspan=5 |Democratic hold|-
Incumbent Democratic Congressman Robert T. Ashmore of the 4th congressional district, in office since 1953, won the Democratic primary and was unopposed in the general election.
| Democratic primary | ||
|---|---|---|
| Candidate | Votes | % |
| 42,068 | 84.2 | |
| Gordon Weathers | 7,910 | 15.8 |
|-| | colspan=5 |Democratic hold|-
Incumbent Democratic Congressman Robert W. Hemphill of the 5th congressional district, in office since 1957, opted to retire. Thomas S. Gettys won the Democratic primary and defeated Republican challenger Robert M. Doster in the general election.
| Democratic primary | ||
|---|---|---|
| Candidate | Votes | % |
| 19,092 | 39.4 | |
| George F. Coleman | 18,048 | 37.2 |
| J. Bates Harvey | 8,913 | 18.4 |
| Harold Hough | 2,417 | 5.0 |
| Democratic primary runoff | |||
|---|---|---|---|
| Candidate | Votes | % | ±% |
| Thomas S. Gettys | 16,861 | 52.2 | +12.8 |
| George F. Coleman | 15,415 | 47.8 | +10.6 |
|-| | colspan=5 |Democratic hold|-
Incumbent Democratic Congressman John L. McMillan of the 6th congressional district, in office since 1939, defeated Republican challenger E. R. Kirkland.
|-| | colspan=5 |Democratic hold|-