See main article: 1856 United States presidential election.
| Election Name: | 1856 United States presidential election in Delaware |
| Country: | Delaware |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1852 United States presidential election in Delaware |
| Previous Year: | 1852 |
| Next Election: | 1860 United States presidential election in Delaware |
| Next Year: | 1860 |
| Election Date: | November 4, 1856 |
| Image1: | James Buchanan.jpg |
| Nominee1: | James Buchanan |
| Party1: | Democratic Party (United States) |
| Home State1: | Pennsylvania |
| Running Mate1: | John C. Breckinridge |
| Electoral Vote1: | 3 |
| Popular Vote1: | 8,004 |
| Percentage1: | 54.83% |
| Nominee2: | Millard Fillmore |
| Party2: | Know Nothing |
| Home State2: | New York |
| Running Mate2: | Andrew Jackson Donelson |
| Electoral Vote2: | 0 |
| Popular Vote2: | 6,275 |
| Percentage2: | 42.99% |
| Map Size: | 210px |
| President | |
| Before Election: | Franklin Pierce |
| Before Party: | Democratic Party (United States) |
| After Election: | James Buchanan |
| After Party: | Democratic |
The 1856 United States presidential election in Delaware took place on November 4, 1856, as part of the 1856 United States presidential election. Voters chose three representatives, or electors to the Electoral College, who voted for president and vice president.
Delaware voted for the Democratic candidate, James Buchanan, over the Republican candidate, John C. Frémont, and the Know Nothing candidate, Millard Fillmore.
Buchanan won the state by a margin of 11.84%.