| Election Name: | 2006 United States House of Representatives election in Delaware |
| Country: | Delaware |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2004 United States House of Representatives election in Delaware |
| Previous Year: | 2004 |
| Next Election: | 2008 United States House of Representatives election in Delaware |
| Next Year: | 2008 |
| Election Date: | November 7, 2006 |
| Nominee1: | Mike Castle |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 143,897 |
| Percentage1: | 57.2% |
| Nominee2: | Dennis Spivack |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 97,565 |
| Percentage2: | 38.8% |
| Map Size: | 210px |
| U.S. Representative | |
| Before Election: | Mike Castle |
| Before Party: | Republican Party (United States) |
| After Election: | Mike Castle |
| After Party: | Republican Party (United States) |
The 2006 United States House of Representatives election in Delaware was held on November 7, 2006. Incumbent Republican U.S. Representative Mike Castle won re-election to a seventh term.
Congressman Castle faced no opposition in the Republican Party primary.