| Election Name: | 1986 United States Senate election in Connecticut |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1980 United States Senate election in Connecticut |
| Previous Year: | 1980 |
| Next Election: | 1992 United States Senate election in Connecticut |
| Next Year: | 1992 |
| Election Date: | November 4, 1986 |
| Nominee1: | Chris Dodd |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 632,695 |
| Percentage1: | 64.76% |
| Nominee2: | Roger Eddy |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 340,438 |
| Percentage2: | 34.85% |
| U.S. Senator | |
| Before Election: | Chris Dodd |
| Before Party: | Democratic Party (United States) |
| After Election: | Chris Dodd |
| After Party: | Democratic Party (United States) |
The 1986 United States Senate election in Connecticut took place on November 4, 1986, alongside other elections to the United States Senate and United States House of Representatives. Incumbent Democratic U.S. Senator Chris Dodd won re-election to a second term.