See main article: 1928 United States presidential election.
| Election Name: | 1928 United States presidential election in South Carolina |
| Country: | South Carolina |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1924 United States presidential election in South Carolina |
| Previous Year: | 1924 |
| Next Election: | 1932 United States presidential election in South Carolina |
| Next Year: | 1932 |
| Election Date: | November 6, 1928 |
| Image1: | Unsuccessful 1928.jpg |
| Nominee1: | Al Smith |
| Party1: | Democratic Party (United States) |
| Home State1: | New York |
| Running Mate1: | Joseph Taylor Robinson |
| Electoral Vote1: | 9 |
| Popular Vote1: | 62,700 |
| Percentage1: | 91.39% |
| Nominee2: | Herbert Hoover |
| Party2: | Republican Party (United States) |
| Home State2: | California |
| Running Mate2: | Charles Curtis |
| Electoral Vote2: | 0 |
| Popular Vote2: | 5,858 |
| Percentage2: | 8.54% |
| Map Size: | 325px |
| President | |
| Before Election: | Calvin Coolidge |
| Before Party: | Republican Party (United States) |
| After Election: | Herbert Hoover |
| After Party: | Republican Party (United States) |
| Flag Year: | 1909 |
The 1928 United States presidential election in South Carolina took place on November 6, 1928, as part of the 1928 United States presidential election which was held throughout all contemporary 48 states. Voters chose 9 representatives, or electors to the Electoral College, who voted for president and vice president.
South Carolina voted for the Democratic nominee, Governor Alfred E. Smith of New York, over the Republican nominee, former Secretary of Commerce Herbert Hoover of California. Smith ran with Senator Joseph Taylor Robinson of Arkansas, while Hoover's running mate was Senate Majority Leader Charles Curtis of Kansas.
In the midst of a third Republican landslide, Smith won South Carolina by a margin of 82.85%. Not only was South Carolina Al Smith's best state, it was the largest margin of victory by both Al Smith and Herbert Hoover that year, largely accredited to Southern politics being heavily democratic and low voter turnout.