| Election Name: | 1986 Connecticut Attorney General election |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1982 Connecticut Attorney General election |
| Previous Year: | 1982 |
| Next Election: | 1990 Connecticut Attorney General election |
| Next Year: | 1990 |
| Election Date: | November 4, 1986 |
| Nominee1: | Joe Lieberman |
| Party1: | Connecticut Democratic Party |
| Popular Vote1: | 613,742 |
| Percentage1: | 64.7% |
| Nominee2: | Richard E. Arnold |
| Party2: | Connecticut Republican Party |
| Popular Vote2: | 335,209 |
| Percentage2: | 35.3% |
| Map Size: | 220px |
| Attorney General | |
| Before Election: | Joe Lieberman |
| Before Party: | Connecticut Democratic Party |
| After Election: | Joe Lieberman |
| After Party: | Connecticut Democratic Party |
The 1986 Connecticut Attorney General election took place on November 4, 1986, to elect the Attorney General of Connecticut. Incumbent Democratic Attorney General Joe Lieberman won re-election to a second term, defeating Republican nominee Richard E. Arnold.