| Election Name: | 1916 United States Senate election in Delaware |
| Country: | Delaware |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1911 United States Senate election in Delaware |
| Previous Year: | 1911 |
| Next Election: | 1922 United States Senate election in Delaware |
| Next Year: | 1922 |
| Election Date: | November 7, 1916 |
| Image1: | File:WOLCOTT, J., SENATOR LCCN2016860177 (cropped).jpg |
| Nominee1: | Josiah O. Wolcott |
| Party1: | Democratic Party (US) |
| Popular Vote1: | 25,434 |
| Percentage1: | 49.67% |
| Party2: | Republican Party (US) |
| Popular Vote2: | 22,925 |
| Percentage2: | 44.77% |
| Map Size: | 210px |
| U.S. Senator | |
| Before Party: | Republican Party (US) |
| After Party: | Democratic Party (US) |
The 1916 United States Senate election in Delaware took place on November 7, 1916.
Incumbent Republican Senator Henry A. du Pont ran for re-election to a third term in office, but was defeated by Democrat Josiah O. Wolcott.