| Election Name: | 1798 United States House of Representatives election in Delaware |
| Country: | Delaware |
| Type: | presidential |
| Ongoing: | No |
| Previous Election: | 1796 United States House of Representatives election in Delaware |
| Previous Year: | 1796 |
| Next Election: | 1800 United States House of Representatives election in Delaware |
| Next Year: | 1800 |
| Election Date: | October 2, 1798 |
| Image1: | BayardJames ASr.jpg |
| Nominee1: | James A. Bayard Sr. |
| Party1: | Federalist Party |
| Popular Vote1: | 2,792 |
| Percentage1: | 61.17% |
| Nominee2: | Archibald Alexander |
| Party2: | Democratic-Republican Party |
| Popular Vote2: | 1,772 |
| Percentage2: | 38.83% |
| U.S. Representative | |
| Before Election: | James A. Bayard Sr. |
| Before Party: | Federalist Party |
| After Election: | James A. Bayard Sr. |
| After Party: | Federalist Party |
The 1798 United States House of Representatives election in Delaware was held on October 2, 1798. The incumbent Representative James A. Bayard Sr. won reelection.