| Election Name: | 1956 U.S. Senate Democratic primary in Florida |
| Country: | Florida |
| Flag Year: | 1900 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1950 United States Senate election in Florida |
| Previous Year: | 1950 |
| Next Election: | 1962 United States Senate election in Florida |
| Next Year: | 1962 |
| Election Date: | May 8, 1956 |
| Image1: | File:George Smathers 1963 (cropped).jpg |
| Nominee1: | George Smathers |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 614,663 |
| Percentage1: | 87.5% |
| Nominee2: | Erle Griffis |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 87,525 |
| Percentage2: | 12.5% |
| U.S. Senator | |
| Before Election: | George Smathers |
| Before Party: | Democratic Party (United States) |
| After Election: | George Smathers |
| After Party: | Democratic Party (United States) |
The 1956 United States Senate election in Florida was held on November 6, 1956. Incumbent Democratic U.S. Senator George Smathers won re-election to a second term.
Smathers' victory in the May 8 primary was tantamount to election, as the Republican Party did not field a candidate for this election. This election was the last Senate election in Florida in which the Republicans did not field a candidate.