| Election Name: | 1998 United States Senate election in Connecticut |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1992 United States Senate election in Connecticut |
| Previous Year: | 1992 |
| Next Election: | 2004 United States Senate election in Connecticut |
| Next Year: | 2004 |
| Election Date: | November 3, 1998 |
| Image1: | Christopher Dodd official portrait 2-cropped.jpg |
| Nominee1: | Chris Dodd |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 628,306 |
| Percentage1: | 65.15% |
| Nominee2: | Gary Franks |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 312,177 |
| Percentage2: | 32.39% |
| U.S. Senator | |
| Before Election: | Chris Dodd |
| Before Party: | Democratic Party (United States) |
| After Election: | Chris Dodd |
| After Party: | Democratic Party (United States) |
The 1998 United States Senate election in Connecticut was held November 3, 1998 alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections. Incumbent Democratic U.S. Senator Chris Dodd won re-election for a fourth term against former Republican U.S. Congressman Gary Franks.